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<h3><a href="../contents.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">API Changes</a><ul>
<li><a class="reference internal" href="#api-changes-in-2-1-2">API Changes in 2.1.2</a><ul>
<li><a class="reference internal" href="#figure-legend-no-longer-checks-for-repeated-lines-to-ignore"><code class="docutils literal"><span class="pre">Figure.legend</span></code> no longer checks for repeated lines to ignore</a></li>
</ul>
</li>
<li><a class="reference internal" href="#api-changes-in-2-1-1">API Changes in 2.1.1</a><ul>
<li><a class="reference internal" href="#default-behavior-of-log-scales-reverted-to-clip-0-values">Default behavior of log scales reverted to clip <= 0 values</a></li>
</ul>
</li>
<li><a class="reference internal" href="#api-changes-in-2-1-0">API Changes in 2.1.0</a><ul>
<li><a class="reference internal" href="#default-behavior-of-log-scales-changed-to-mask-0-values">Default behavior of log scales changed to mask <= 0 values</a></li>
<li><a class="reference internal" href="#matplotlib-cbook-callbackregistry-process-suppresses-exceptions-by-default"><code class="docutils literal"><span class="pre">matplotlib.cbook.CallbackRegistry.process()</span></code> suppresses exceptions by default</a></li>
<li><a class="reference internal" href="#improved-toggling-of-the-axes-grids">Improved toggling of the axes grids</a></li>
<li><a class="reference internal" href="#removal-of-warning-on-empty-legends">Removal of warning on empty legends</a></li>
<li><a class="reference internal" href="#more-accurate-legend-autopositioning">More accurate legend autopositioning</a></li>
<li><a class="reference internal" href="#cleanup-of-stock-sample-data">Cleanup of stock sample data</a></li>
<li><a class="reference internal" href="#updated-qhull-to-2015-2">Updated qhull to 2015.2</a></li>
<li><a class="reference internal" href="#improved-delaunay-triangulations-with-large-offsets">Improved Delaunay triangulations with large offsets</a></li>
<li><a class="reference internal" href="#use-backports-functools-lru-cache-instead-of-functools32">Use <code class="docutils literal"><span class="pre">backports.functools_lru_cache</span></code> instead of <code class="docutils literal"><span class="pre">functools32</span></code></a></li>
<li><a class="reference internal" href="#cbook-is-numlike-only-performs-an-instance-check"><code class="docutils literal"><span class="pre">cbook.is_numlike</span></code> only performs an instance check</a></li>
<li><a class="reference internal" href="#elliptical-arcs-now-drawn-between-correct-angles">Elliptical arcs now drawn between correct angles</a></li>
<li><a class="reference internal" href="#d-backend-no-longer-sets-the-backend"><code class="docutils literal"><span class="pre">-d$backend</span></code> no longer sets the backend</a></li>
<li><a class="reference internal" href="#path-intersects-bbox-always-treats-the-bounding-box-as-filled">Path.intersects_bbox always treats the bounding box as filled</a></li>
<li><a class="reference internal" href="#wx-no-longer-calls-generates-idleevent-events-or-calls-idle-event">WX no longer calls generates <code class="docutils literal"><span class="pre">IdleEvent</span></code> events or calls <code class="docutils literal"><span class="pre">idle_event</span></code></a></li>
<li><a class="reference internal" href="#correct-scaling-of-magnitude-spectrum">Correct scaling of <code class="docutils literal"><span class="pre">magnitude_spectrum()</span></code></a></li>
<li><a class="reference internal" href="#change-to-signatures-of-bar-barh">Change to signatures of <code class="docutils literal"><span class="pre">bar()</span></code> & <code class="docutils literal"><span class="pre">barh()</span></code></a></li>
<li><a class="reference internal" href="#font-cache-as-json">Font cache as json</a></li>
<li><a class="reference internal" href="#invalid-non-finite-axis-limit-error">Invalid (Non-finite) Axis Limit Error</a></li>
<li><a class="reference internal" href="#scatter-and-collection-offsets-are-no-longer-implicitly-flattened"><code class="docutils literal"><span class="pre">scatter</span></code> and <code class="docutils literal"><span class="pre">Collection</span></code> offsets are no longer implicitly flattened</a></li>
<li><a class="reference internal" href="#deprecations">Deprecations</a><ul>
<li><a class="reference internal" href="#graphicscontextbase-s-linestyle-property"><code class="docutils literal"><span class="pre">GraphicsContextBase</span></code>’s <code class="docutils literal"><span class="pre">linestyle</span></code> property.</a></li>
<li><a class="reference internal" href="#navigationtoolbar2-dynamic-update"><code class="docutils literal"><span class="pre">NavigationToolbar2.dynamic_update</span></code></a></li>
<li><a class="reference internal" href="#testing">Testing</a></li>
<li><a class="reference internal" href="#engformatter-num-arg-as-string"><code class="docutils literal"><span class="pre">EngFormatter</span></code> <em>num</em> arg as string</a></li>
<li><a class="reference internal" href="#mpl-toolkits-axes-grid-module"><code class="docutils literal"><span class="pre">mpl_toolkits.axes_grid</span></code> module</a></li>
<li><a class="reference internal" href="#axes-collision-in-figure-add-axes"><code class="docutils literal"><span class="pre">Axes</span></code> collision in <code class="docutils literal"><span class="pre">Figure.add_axes</span></code></a></li>
<li><a class="reference internal" href="#former-validators-for-contour-negative-linestyle">Former validators for <code class="docutils literal"><span class="pre">contour.negative_linestyle</span></code></a></li>
<li><a class="reference internal" href="#cbook"><code class="docutils literal"><span class="pre">cbook</span></code></a></li>
</ul>
</li>
<li><a class="reference internal" href="#code-removal">Code Removal</a><ul>
<li><a class="reference internal" href="#qt4-compat-py">qt4_compat.py</a></li>
<li><a class="reference internal" href="#previously-deprecated-methods">Previously Deprecated methods</a></li>
<li><a class="reference internal" href="#axes-set-aspect-normal"><code class="docutils literal"><span class="pre">Axes.set_aspect("normal")</span></code></a></li>
<li><a class="reference internal" href="#shading-kwarg-to-pcolor"><code class="docutils literal"><span class="pre">shading</span></code> kwarg to <code class="docutils literal"><span class="pre">pcolor</span></code></a></li>
<li><a class="reference internal" href="#functions-removed-from-the-lines-module">Functions removed from the <code class="docutils literal"><span class="pre">lines</span></code> module</a></li>
<li><a class="reference internal" href="#pdf-backend-functions">PDF backend functions</a></li>
<li><a class="reference internal" href="#matplotlib-delaunay">matplotlib.delaunay</a></li>
</ul>
</li>
</ul>
</li>
<li><a class="reference internal" href="#api-changes-in-2-0-1">API Changes in 2.0.1</a><ul>
<li><a class="reference internal" href="#extensions-to-matplotlib-backend-bases-graphicscontextbase">Extensions to <code class="docutils literal"><span class="pre">matplotlib.backend_bases.GraphicsContextBase</span></code></a></li>
<li><a class="reference internal" href="#afm-get-fontconfig-fonts-returns-a-list-of-paths-and-does-not-check-for-existence"><code class="docutils literal"><span class="pre">afm.get_fontconfig_fonts</span></code> returns a list of paths and does not check for existence</a></li>
<li><a class="reference internal" href="#bar-now-returns-rectangles-of-negative-height-or-width-if-the-corresponding-input-is-negative"><code class="docutils literal"><span class="pre">bar</span></code> now returns rectangles of negative height or width if the corresponding input is negative</a></li>
<li><a class="reference internal" href="#do-not-clip-line-width-when-scaling-dashes">Do not clip line width when scaling dashes</a></li>
<li><a class="reference internal" href="#deprecate-vega-color-maps">Deprecate ‘Vega’ color maps</a></li>
</ul>
</li>
<li><a class="reference internal" href="#api-changes-in-2-0-0">API Changes in 2.0.0</a><ul>
<li><a class="reference internal" href="#deprecation-and-removal">Deprecation and removal</a><ul>
<li><a class="reference internal" href="#color-of-axes">Color of Axes</a></li>
<li><a class="reference internal" href="#gtk-and-gdk-backends-deprecated">GTK and GDK backends deprecated</a></li>
<li><a class="reference internal" href="#wx-backend-deprecated">WX backend deprecated</a></li>
<li><a class="reference internal" href="#cocoaagg-backend-removed">CocoaAgg backend removed</a></li>
<li><a class="reference internal" href="#round-removed-from-tkagg-backend"><code class="docutils literal"><span class="pre">round</span></code> removed from TkAgg Backend</a></li>
<li><a class="reference internal" href="#hold-functionality-deprecated">‘hold’ functionality deprecated</a></li>
</ul>
</li>
<li><a class="reference internal" href="#artist-update-has-return-value"><code class="docutils literal"><span class="pre">Artist.update</span></code> has return value</a></li>
<li><a class="reference internal" href="#legend-initializers-gain-edgecolor-and-facecolor-kwargs"><code class="docutils literal"><span class="pre">Legend</span></code> initializers gain edgecolor and facecolor kwargs</a></li>
<li><a class="reference internal" href="#qualitative-colormaps">Qualitative colormaps</a></li>
<li><a class="reference internal" href="#change-in-the-draw-image-backend-api">Change in the <code class="docutils literal"><span class="pre">draw_image</span></code> backend API</a></li>
<li><a class="reference internal" href="#matplotlib-ticker-linearlocator-algorithm-update"><code class="docutils literal"><span class="pre">matplotlib.ticker.LinearLocator</span></code> algorithm update</a></li>
<li><a class="reference internal" href="#matplotlib-ticker-loglocator-gains-numticks-kwarg"><code class="docutils literal"><span class="pre">matplotlib.ticker.LogLocator</span></code> gains numticks kwarg</a></li>
<li><a class="reference internal" href="#matplotlib-ticker-logformatter-two-new-kwargs"><code class="docutils literal"><span class="pre">matplotlib.ticker.LogFormatter</span></code>: two new kwargs</a></li>
<li><a class="reference internal" href="#new-defaults-for-3d-quiver-function-in-mpl-toolkits-mplot3d-axes3d-py">New defaults for 3D quiver function in mpl_toolkits.mplot3d.axes3d.py</a></li>
<li><a class="reference internal" href="#stale-figure-behavior">Stale figure behavior</a></li>
<li><a class="reference internal" href="#the-spectral-colormap-is-now-nipy-spectral">The spectral colormap is now nipy_spectral</a></li>
<li><a class="reference internal" href="#default-install-no-longer-includes-test-images">Default install no longer includes test images</a></li>
</ul>
</li>
<li><a class="reference internal" href="#changes-in-1-5-3">Changes in 1.5.3</a><ul>
<li><a class="reference internal" href="#ax-plot-marker-none-gives-default-marker"><code class="docutils literal"><span class="pre">ax.plot(...,</span> <span class="pre">marker=None)</span></code> gives default marker</a></li>
</ul>
</li>
<li><a class="reference internal" href="#changes-in-1-5-2">Changes in 1.5.2</a><ul>
<li><a class="reference internal" href="#default-behavior-changes">Default Behavior Changes</a><ul>
<li><a class="reference internal" href="#changed-default-autorange-behavior-in-boxplots">Changed default <code class="docutils literal"><span class="pre">autorange</span></code> behavior in boxplots</a></li>
</ul>
</li>
</ul>
</li>
<li><a class="reference internal" href="#changes-in-1-5-0">Changes in 1.5.0</a><ul>
<li><a class="reference internal" href="#code-changes">Code Changes</a><ul>
<li><a class="reference internal" href="#reversed-matplotlib-cbook-ls-mapper-added-ls-mapper-r">Reversed <code class="docutils literal"><span class="pre">matplotlib.cbook.ls_mapper</span></code>, added <code class="docutils literal"><span class="pre">ls_mapper_r</span></code></a></li>
<li><a class="reference internal" href="#prevent-moving-artists-between-axes-property-ify-artist-axes-deprecate-artist-get-set-axes">Prevent moving artists between Axes, Property-ify Artist.axes, deprecate Artist.{get,set}_axes</a></li>
<li><a class="reference internal" href="#tightened-input-validation-on-pivot-kwarg-to-quiver">Tightened input validation on ‘pivot’ kwarg to quiver</a></li>
<li><a class="reference internal" href="#reordered-axes-get-children">Reordered <code class="docutils literal"><span class="pre">Axes.get_children</span></code></a></li>
<li><a class="reference internal" href="#changed-behaviour-of-contour-plots">Changed behaviour of contour plots</a></li>
<li><a class="reference internal" href="#added-set-params-function-to-all-locator-types">Added set_params function to all Locator types</a></li>
<li><a class="reference internal" href="#disallow-none-as-x-or-y-value-in-ax-plot">Disallow <code class="docutils literal"><span class="pre">None</span></code> as x or y value in ax.plot</a></li>
<li><a class="reference internal" href="#removed-args-and-kwargs-from-microsecondlocator-call">Removed <code class="docutils literal"><span class="pre">args</span></code> and <code class="docutils literal"><span class="pre">kwargs</span></code> from <code class="docutils literal"><span class="pre">MicrosecondLocator.__call__</span></code></a></li>
<li><a class="reference internal" href="#no-valueerror-for-the-microsecondlocator-and-yearlocator">No <code class="docutils literal"><span class="pre">ValueError</span></code> for the MicrosecondLocator and YearLocator</a></li>
<li><a class="reference internal" href="#offsetbox-drawingarea-respects-the-clip-keyword-argument">‘OffsetBox.DrawingArea’ respects the ‘clip’ keyword argument</a></li>
<li><a class="reference internal" href="#add-salt-to-clippath-id">Add salt to clipPath id</a></li>
<li><a class="reference internal" href="#changed-snap-threshold-for-circle-markers-to-inf">Changed snap threshold for circle markers to inf</a></li>
<li><a class="reference internal" href="#preserve-units-with-text-position">Preserve units with Text position</a></li>
<li><a class="reference internal" href="#new-api-for-custom-axes-view-changes">New API for custom Axes view changes</a></li>
</ul>
</li>
<li><a class="reference internal" href="#mathtex-visual-changes">MathTex visual changes</a><ul>
<li><a class="reference internal" href="#improved-spacing-in-mathtext">Improved spacing in mathtext</a></li>
<li><a class="reference internal" href="#no-annotation-coordinates-wrap">No annotation coordinates wrap</a></li>
</ul>
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<li><a class="reference internal" href="#deprecation">Deprecation</a><ul>
<li><a class="reference internal" href="#deprecated-graphicscontextbase-set-graylevel">Deprecated <code class="docutils literal"><span class="pre">GraphicsContextBase.set_graylevel</span></code></a></li>
<li><a class="reference internal" href="#deprecated-idle-event">deprecated idle_event</a></li>
<li><a class="reference internal" href="#color-cycle-deprecated"><code class="docutils literal"><span class="pre">color_cycle</span></code> deprecated</a></li>
</ul>
</li>
<li><a class="reference internal" href="#bundled-jquery">Bundled jquery</a></li>
<li><a class="reference internal" href="#code-removed">Code Removed</a><ul>
<li><a class="reference internal" href="#removed-image-from-main-namespace">Removed <code class="docutils literal"><span class="pre">Image</span></code> from main namespace</a></li>
<li><a class="reference internal" href="#removed-lod-from-artist">Removed <code class="docutils literal"><span class="pre">lod</span></code> from Artist</a></li>
<li><a class="reference internal" href="#removed-threading-related-classes-from-cbook">Removed threading related classes from cbook</a></li>
<li><a class="reference internal" href="#removed-lena-images-from-sample-data">Removed <code class="docutils literal"><span class="pre">Lena</span></code> images from sample_data</a></li>
<li><a class="reference internal" href="#legend">Legend</a></li>
<li><a class="reference internal" href="#legend-handlers">Legend handlers</a></li>
<li><a class="reference internal" href="#axis">Axis</a></li>
<li><a class="reference internal" href="#finance-py">finance.py</a></li>
<li><a class="reference internal" href="#annotation">Annotation</a></li>
<li><a class="reference internal" href="#spinxext-ipython-py">spinxext.ipython_*.py</a></li>
<li><a class="reference internal" href="#linecollection-color">LineCollection.color</a></li>
<li><a class="reference internal" href="#remove-faceted-as-a-valid-value-for-shading-in-tri-tripcolor">remove <code class="docutils literal"><span class="pre">'faceted'</span></code> as a valid value for <code class="docutils literal"><span class="pre">shading</span></code> in <code class="docutils literal"><span class="pre">tri.tripcolor</span></code></a></li>
<li><a class="reference internal" href="#remove-faceted-kwarg-from-scatter">Remove <code class="docutils literal"><span class="pre">faceted</span></code> kwarg from scatter</a></li>
<li><a class="reference internal" href="#remove-set-colorbar-method-from-scalarmappable">Remove <code class="docutils literal"><span class="pre">set_colorbar</span></code> method from <code class="docutils literal"><span class="pre">ScalarMappable</span></code></a></li>
<li><a class="reference internal" href="#patheffects-svg">patheffects.svg</a></li>
<li><a class="reference internal" href="#remove-testing-image-util-py">Remove <code class="docutils literal"><span class="pre">testing.image_util.py</span></code></a></li>
<li><a class="reference internal" href="#remove-mlab-fifobuffer">Remove <code class="docutils literal"><span class="pre">mlab.FIFOBuffer</span></code></a></li>
<li><a class="reference internal" href="#remove-mlab-prepca">Remove <code class="docutils literal"><span class="pre">mlab.prepca</span></code></a></li>
<li><a class="reference internal" href="#remove-navigationtoolbar2qtagg">Remove <code class="docutils literal"><span class="pre">NavigationToolbar2QTAgg</span></code></a></li>
<li><a class="reference internal" href="#mpl-py">mpl.py</a></li>
</ul>
</li>
</ul>
</li>
<li><a class="reference internal" href="#changes-in-1-4-x">Changes in 1.4.x</a><ul>
<li><a class="reference internal" href="#id1">Code changes</a></li>
<li><a class="reference internal" href="#id2">Code removal</a></li>
</ul>
</li>
<li><a class="reference internal" href="#changes-in-1-3-x">Changes in 1.3.x</a><ul>
<li><a class="reference internal" href="#changes-in-1-3-1">Changes in 1.3.1</a></li>
<li><a class="reference internal" href="#id3">Code removal</a></li>
<li><a class="reference internal" href="#code-deprecation">Code deprecation</a></li>
<li><a class="reference internal" href="#id4">Code changes</a></li>
<li><a class="reference internal" href="#configuration-and-rcparams">Configuration and rcParams</a></li>
</ul>
</li>
<li><a class="reference internal" href="#changes-in-1-2-x">Changes in 1.2.x</a></li>
<li><a class="reference internal" href="#changes-in-1-1-x">Changes in 1.1.x</a></li>
<li><a class="reference internal" href="#changes-beyond-0-99-x">Changes beyond 0.99.x</a></li>
<li><a class="reference internal" href="#changes-in-0-99">Changes in 0.99</a></li>
<li><a class="reference internal" href="#changes-for-0-98-x">Changes for 0.98.x</a></li>
<li><a class="reference internal" href="#changes-for-0-98-1">Changes for 0.98.1</a></li>
<li><a class="reference internal" href="#changes-for-0-98-0">Changes for 0.98.0</a><ul>
<li><a class="reference internal" href="#notes-about-the-transforms-refactoring">Notes about the transforms refactoring</a><ul>
<li><a class="reference internal" href="#matplotlib-transforms"><code class="docutils literal"><span class="pre">matplotlib.transforms</span></code></a></li>
<li><a class="reference internal" href="#matplotlib-axes"><code class="docutils literal"><span class="pre">matplotlib.axes</span></code></a></li>
<li><a class="reference internal" href="#matplotlib-artist"><code class="docutils literal"><span class="pre">matplotlib.artist</span></code></a></li>
<li><a class="reference internal" href="#matplotlib-collections"><code class="docutils literal"><span class="pre">matplotlib.collections</span></code></a></li>
<li><a class="reference internal" href="#matplotlib-colors"><code class="docutils literal"><span class="pre">matplotlib.colors</span></code></a></li>
<li><a class="reference internal" href="#matplotlib-contour"><code class="docutils literal"><span class="pre">matplotlib.contour</span></code></a></li>
<li><a class="reference internal" href="#matplotlib-figure"><code class="docutils literal"><span class="pre">matplotlib.figure</span></code></a></li>
<li><a class="reference internal" href="#matplotlib-patches"><code class="docutils literal"><span class="pre">matplotlib.patches</span></code></a></li>
<li><a class="reference internal" href="#matplotlib-backend-bases"><code class="docutils literal"><span class="pre">matplotlib.backend_bases</span></code></a></li>
<li><a class="reference internal" href="#rendererbase"><code class="docutils literal"><span class="pre">RendererBase</span></code></a></li>
</ul>
</li>
</ul>
</li>
<li><a class="reference internal" href="#changes-for-0-91-2">Changes for 0.91.2</a></li>
<li><a class="reference internal" href="#changes-for-0-91-1">Changes for 0.91.1</a></li>
<li><a class="reference internal" href="#changes-for-0-91-0">Changes for 0.91.0</a></li>
<li><a class="reference internal" href="#changes-for-0-90-1">Changes for 0.90.1</a></li>
<li><a class="reference internal" href="#changes-for-0-90-0">Changes for 0.90.0</a></li>
<li><a class="reference internal" href="#changes-for-0-87-7">Changes for 0.87.7</a></li>
<li><a class="reference internal" href="#changes-for-0-86">Changes for 0.86</a></li>
<li><a class="reference internal" href="#changes-for-0-85">Changes for 0.85</a></li>
<li><a class="reference internal" href="#changes-for-0-84">Changes for 0.84</a></li>
<li><a class="reference internal" href="#changes-for-0-83">Changes for 0.83</a></li>
<li><a class="reference internal" href="#changes-for-0-82">Changes for 0.82</a></li>
<li><a class="reference internal" href="#changes-for-0-81">Changes for 0.81</a></li>
<li><a class="reference internal" href="#changes-for-0-80">Changes for 0.80</a></li>
<li><a class="reference internal" href="#changes-for-0-73">Changes for 0.73</a></li>
<li><a class="reference internal" href="#changes-for-0-72">Changes for 0.72</a></li>
<li><a class="reference internal" href="#changes-for-0-71">Changes for 0.71</a></li>
<li><a class="reference internal" href="#changes-for-0-70">Changes for 0.70</a></li>
<li><a class="reference internal" href="#changes-for-0-65-1">Changes for 0.65.1</a></li>
<li><a class="reference internal" href="#changes-for-0-65">Changes for 0.65</a></li>
<li><a class="reference internal" href="#changes-for-0-63">Changes for 0.63</a></li>
<li><a class="reference internal" href="#changes-for-0-61">Changes for 0.61</a></li>
<li><a class="reference internal" href="#changes-for-0-60">Changes for 0.60</a></li>
<li><a class="reference internal" href="#changes-for-0-54-3">Changes for 0.54.3</a></li>
<li><a class="reference internal" href="#changes-for-0-54">Changes for 0.54</a><ul>
<li><a class="reference internal" href="#matlab-interface">MATLAB interface</a><ul>
<li><a class="reference internal" href="#dpi">dpi</a></li>
<li><a class="reference internal" href="#pcolor-and-scatter">pcolor and scatter</a></li>
<li><a class="reference internal" href="#mathtext-spacing">mathtext spacing</a></li>
</ul>
</li>
<li><a class="reference internal" href="#object-interface-application-programmers">Object interface - Application programmers</a><ul>
<li><a class="reference internal" href="#autoscaling">Autoscaling</a></li>
<li><a class="reference internal" href="#axes-creation">Axes creation</a></li>
<li><a class="reference internal" href="#artist-methods">Artist methods</a></li>
<li><a class="reference internal" href="#bounding-boxes">Bounding boxes</a></li>
<li><a class="reference internal" href="#object-constructors">Object constructors</a></li>
<li><a class="reference internal" href="#transformations">Transformations</a></li>
</ul>
</li>
</ul>
</li>
<li><a class="reference internal" href="#changes-for-0-50">Changes for 0.50</a></li>
<li><a class="reference internal" href="#changes-for-0-42">Changes for 0.42</a></li>
<li><a class="reference internal" href="#changes-for-0-40">Changes for 0.40</a></li>
</ul>
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<div class="section" id="api-changes">
<h1>API Changes<a class="headerlink" href="#api-changes" title="Permalink to this headline">¶</a></h1>
<p>Log of changes to Matplotlib that affect the outward-facing API. If
updating Matplotlib breaks your scripts, this list may help you figure
out what caused the breakage and how to fix it by updating your code.</p>
<p>For new features that were added to Matplotlib, please see
<a class="reference internal" href="../users/whats_new.html#whats-new"><span class="std std-ref">What’s new in Matplotlib</span></a>.</p>
<div class="section" id="api-changes-in-2-1-2">
<h2>API Changes in 2.1.2<a class="headerlink" href="#api-changes-in-2-1-2" title="Permalink to this headline">¶</a></h2>
<div class="section" id="figure-legend-no-longer-checks-for-repeated-lines-to-ignore">
<h3><code class="xref py py-obj docutils literal"><span class="pre">Figure.legend</span></code> no longer checks for repeated lines to ignore<a class="headerlink" href="#figure-legend-no-longer-checks-for-repeated-lines-to-ignore" title="Permalink to this headline">¶</a></h3>
<p><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.Figure.legend</span></code> used to check if a line had the
same label as an existing legend entry. If it also had the same line color
or marker color legend didn’t add a new entry for that line. However, the
list of conditions was incomplete, didn’t handle RGB tupples,
didn’t handle linewidths or linestyles etc.</p>
<p>This logic did not exist in <code class="xref py py-obj docutils literal"><span class="pre">Axes.legend</span></code>. It was included (erroneously)
in Matplotlib 2.1.1 when the legend argument parsing was unified
[#9324](<a class="reference external" href="https://github.com/matplotlib/matplotlib/pull/9324">https://github.com/matplotlib/matplotlib/pull/9324</a>). This change
removes that check in <code class="xref py py-obj docutils literal"><span class="pre">Axes.legend</span></code> again to restore the old behavior.</p>
<p>This logic has also been dropped from <a class="reference internal" href="_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.legend" title="matplotlib.figure.Figure.legend"><code class="xref py py-obj docutils literal"><span class="pre">Figure.legend</span></code></a>, where it
was previously undocumented. Repeated
lines with the same label will now each have an entry in the legend. If
you do not want the duplicate entries, don’t add a label to the line, or
prepend the label with an underscore.</p>
</div>
</div>
<div class="section" id="api-changes-in-2-1-1">
<h2>API Changes in 2.1.1<a class="headerlink" href="#api-changes-in-2-1-1" title="Permalink to this headline">¶</a></h2>
<div class="section" id="default-behavior-of-log-scales-reverted-to-clip-0-values">
<h3>Default behavior of log scales reverted to clip <= 0 values<a class="headerlink" href="#default-behavior-of-log-scales-reverted-to-clip-0-values" title="Permalink to this headline">¶</a></h3>
<p>The change it 2.1.0 to mask in logscale by default had more disruptive
changes than anticipated and has been reverted, however the clipping is now
done in a way that fixes the issues that motivated changing the default behavior
to <code class="docutils literal"><span class="pre">'mask'</span></code>.</p>
<p>As a side effect of this change, error bars which go negative now work as expected
on log scales.</p>
</div>
</div>
<div class="section" id="api-changes-in-2-1-0">
<h2>API Changes in 2.1.0<a class="headerlink" href="#api-changes-in-2-1-0" title="Permalink to this headline">¶</a></h2>
<div class="section" id="default-behavior-of-log-scales-changed-to-mask-0-values">
<h3>Default behavior of log scales changed to mask <= 0 values<a class="headerlink" href="#default-behavior-of-log-scales-changed-to-mask-0-values" title="Permalink to this headline">¶</a></h3>
<p>Calling <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.set_xscale.html#matplotlib.axes.Axes.set_xscale" title="matplotlib.axes.Axes.set_xscale"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.axes.Axes.set_xscale</span></code></a> or <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.set_yscale.html#matplotlib.axes.Axes.set_yscale" title="matplotlib.axes.Axes.set_yscale"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.axes.Axes.set_yscale</span></code></a>
now uses ‘mask’ as the default method to handle invalid values (as opposed to
‘clip’). This means that any values <= 0 on a log scale will not be shown.</p>
<p>Previously they were clipped to a very small number and shown.</p>
</div>
<div class="section" id="matplotlib-cbook-callbackregistry-process-suppresses-exceptions-by-default">
<h3><a class="reference internal" href="cbook_api.html#matplotlib.cbook.CallbackRegistry.process" title="matplotlib.cbook.CallbackRegistry.process"><code class="xref py py-meth docutils literal"><span class="pre">matplotlib.cbook.CallbackRegistry.process()</span></code></a> suppresses exceptions by default<a class="headerlink" href="#matplotlib-cbook-callbackregistry-process-suppresses-exceptions-by-default" title="Permalink to this headline">¶</a></h3>
<p>Matplotlib uses instances of <a class="reference internal" href="cbook_api.html#matplotlib.cbook.CallbackRegistry" title="matplotlib.cbook.CallbackRegistry"><code class="xref py py-obj docutils literal"><span class="pre">CallbackRegistry</span></code></a>
as a bridge between user input event from the GUI and user callbacks.
Previously, any exceptions raised in a user call back would bubble out
of of the <code class="docutils literal"><span class="pre">process</span></code> method, which is typically in the GUI event
loop. Most GUI frameworks simple print the traceback to the screen
and continue as there is not always a clear method of getting the
exception back to the user. However PyQt5 now exits the process when
it receives an un-handled python exception in the event loop. Thus,
<a class="reference internal" href="cbook_api.html#matplotlib.cbook.CallbackRegistry.process" title="matplotlib.cbook.CallbackRegistry.process"><code class="xref py py-meth docutils literal"><span class="pre">process()</span></code></a> now suppresses and
prints tracebacks to stderr by default.</p>
<p>What <a class="reference internal" href="cbook_api.html#matplotlib.cbook.CallbackRegistry.process" title="matplotlib.cbook.CallbackRegistry.process"><code class="xref py py-meth docutils literal"><span class="pre">process()</span></code></a> does with exceptions
is now user configurable via the <code class="docutils literal"><span class="pre">exception_handler</span></code> attribute and kwarg. To
restore the previous behavior pass <code class="docutils literal"><span class="pre">None</span></code></p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">cb</span> <span class="o">=</span> <span class="n">CallbackRegistry</span><span class="p">(</span><span class="n">exception_handler</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span>
</pre></div>
</div>
<p>A function which take and <code class="docutils literal"><span class="pre">Exception</span></code> as its only argument may also be passed</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="k">def</span> <span class="nf">maybe_reraise</span><span class="p">(</span><span class="n">exc</span><span class="p">):</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">exc</span><span class="p">,</span> <span class="ne">RuntimeError</span><span class="p">):</span>
<span class="k">pass</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">exc</span>
<span class="n">cb</span> <span class="o">=</span> <span class="n">CallbackRegistry</span><span class="p">(</span><span class="n">exception_handler</span><span class="o">=</span><span class="n">maybe_reraise</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="improved-toggling-of-the-axes-grids">
<h3>Improved toggling of the axes grids<a class="headerlink" href="#improved-toggling-of-the-axes-grids" title="Permalink to this headline">¶</a></h3>
<p>The <code class="xref py py-obj docutils literal"><span class="pre">g</span></code> key binding now switches the states of the <code class="xref py py-obj docutils literal"><span class="pre">x</span></code> and <code class="xref py py-obj docutils literal"><span class="pre">y</span></code> grids
independently (by cycling through all four on/off combinations).</p>
<p>The new <code class="xref py py-obj docutils literal"><span class="pre">G</span></code> key binding switches the states of the minor grids.</p>
<p>Both bindings are disabled if only a subset of the grid lines (in either
direction) is visible, to avoid making irreversible changes to the figure.</p>
</div>
<div class="section" id="removal-of-warning-on-empty-legends">
<h3>Removal of warning on empty legends<a class="headerlink" href="#removal-of-warning-on-empty-legends" title="Permalink to this headline">¶</a></h3>
<p><code class="docutils literal"><span class="pre">plt.legend</span></code> used to issue a warning when no labeled artist could be
found. This warning has been removed.</p>
</div>
<div class="section" id="more-accurate-legend-autopositioning">
<h3>More accurate legend autopositioning<a class="headerlink" href="#more-accurate-legend-autopositioning" title="Permalink to this headline">¶</a></h3>
<p>Automatic positioning of legends now prefers using the area surrounded
by a <code class="xref py py-obj docutils literal"><span class="pre">Line2D</span></code> rather than placing the legend over the line itself.</p>
</div>
<div class="section" id="cleanup-of-stock-sample-data">
<h3>Cleanup of stock sample data<a class="headerlink" href="#cleanup-of-stock-sample-data" title="Permalink to this headline">¶</a></h3>
<p>The sample data of stocks has been cleaned up to remove redundancies and
increase portability. The <code class="docutils literal"><span class="pre">AAPL.dat.gz</span></code>, <code class="docutils literal"><span class="pre">INTC.dat.gz</span></code> and <code class="docutils literal"><span class="pre">aapl.csv</span></code>
files have been removed entirely and will also no longer be available from
<a class="reference internal" href="cbook_api.html#matplotlib.cbook.get_sample_data" title="matplotlib.cbook.get_sample_data"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.cbook.get_sample_data</span></code></a>. If a CSV file is required, we suggest using
the <code class="docutils literal"><span class="pre">msft.csv</span></code> that continues to be shipped in the sample data. If a NumPy
binary file is acceptable, we suggest using one of the following two new files.
The <code class="docutils literal"><span class="pre">aapl.npy.gz</span></code> and <code class="docutils literal"><span class="pre">goog.npy</span></code> files have been replaced by <code class="docutils literal"><span class="pre">aapl.npz</span></code>
and <code class="docutils literal"><span class="pre">goog.npz</span></code>, wherein the first column’s type has changed from
<a class="reference external" href="https://docs.python.org/3/library/datetime.html#datetime.date" title="(in Python v3.6)"><code class="xref py py-obj docutils literal"><span class="pre">datetime.date</span></code></a> to <code class="xref py py-obj docutils literal"><span class="pre">np.datetime64</span></code> for better portability across Python
versions. Note that Matplotlib does not fully support <code class="xref py py-obj docutils literal"><span class="pre">np.datetime64</span></code> as yet.</p>
</div>
<div class="section" id="updated-qhull-to-2015-2">
<h3>Updated qhull to 2015.2<a class="headerlink" href="#updated-qhull-to-2015-2" title="Permalink to this headline">¶</a></h3>
<p>The version of qhull shipped with Matplotlib, which is used for
Delaunay triangulation, has been updated from version 2012.1 to
2015.2.</p>
</div>
<div class="section" id="improved-delaunay-triangulations-with-large-offsets">
<h3>Improved Delaunay triangulations with large offsets<a class="headerlink" href="#improved-delaunay-triangulations-with-large-offsets" title="Permalink to this headline">¶</a></h3>
<p>Delaunay triangulations now deal with large x,y offsets in a better
way. This can cause minor changes to any triangulations calculated
using Matplotlib, i.e. any use of <a class="reference internal" href="tri_api.html#matplotlib.tri.Triangulation" title="matplotlib.tri.Triangulation"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.tri.Triangulation</span></code></a> that
requests that a Delaunay triangulation is calculated, which includes
<a class="reference internal" href="_as_gen/matplotlib.pyplot.tricontour.html#matplotlib.pyplot.tricontour" title="matplotlib.pyplot.tricontour"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.pyplot.tricontour</span></code></a>, <a class="reference internal" href="_as_gen/matplotlib.pyplot.tricontourf.html#matplotlib.pyplot.tricontourf" title="matplotlib.pyplot.tricontourf"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.pyplot.tricontourf</span></code></a>,
<a class="reference internal" href="_as_gen/matplotlib.pyplot.tripcolor.html#matplotlib.pyplot.tripcolor" title="matplotlib.pyplot.tripcolor"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.pyplot.tripcolor</span></code></a>, <a class="reference internal" href="_as_gen/matplotlib.pyplot.triplot.html#matplotlib.pyplot.triplot" title="matplotlib.pyplot.triplot"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.pyplot.triplot</span></code></a>,
<a class="reference internal" href="mlab_api.html#matplotlib.mlab.griddata" title="matplotlib.mlab.griddata"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.mlab.griddata</span></code></a> and
<a class="reference internal" href="_as_gen/mpl_toolkits.mplot3d.axes3d.Axes3D.html#mpl_toolkits.mplot3d.axes3d.Axes3D.plot_trisurf" title="mpl_toolkits.mplot3d.axes3d.Axes3D.plot_trisurf"><code class="xref py py-obj docutils literal"><span class="pre">mpl_toolkits.mplot3d.axes3d.Axes3D.plot_trisurf</span></code></a>.</p>
</div>
<div class="section" id="use-backports-functools-lru-cache-instead-of-functools32">
<h3>Use <code class="docutils literal"><span class="pre">backports.functools_lru_cache</span></code> instead of <code class="docutils literal"><span class="pre">functools32</span></code><a class="headerlink" href="#use-backports-functools-lru-cache-instead-of-functools32" title="Permalink to this headline">¶</a></h3>
<p>It’s better maintained and more widely used (by pylint, jaraco, etc).</p>
</div>
<div class="section" id="cbook-is-numlike-only-performs-an-instance-check">
<h3><code class="docutils literal"><span class="pre">cbook.is_numlike</span></code> only performs an instance check<a class="headerlink" href="#cbook-is-numlike-only-performs-an-instance-check" title="Permalink to this headline">¶</a></h3>
<p><a class="reference internal" href="cbook_api.html#matplotlib.cbook.is_numlike" title="matplotlib.cbook.is_numlike"><code class="xref py py-func docutils literal"><span class="pre">is_numlike()</span></code></a> now only checks that its argument
is an instance of <code class="docutils literal"><span class="pre">(numbers.Number,</span> <span class="pre">np.Number)</span></code>. In particular,
this means that arrays are now not num-like.</p>
</div>
<div class="section" id="elliptical-arcs-now-drawn-between-correct-angles">
<h3>Elliptical arcs now drawn between correct angles<a class="headerlink" href="#elliptical-arcs-now-drawn-between-correct-angles" title="Permalink to this headline">¶</a></h3>
<p>The <a class="reference internal" href="_as_gen/matplotlib.patches.Arc.html#matplotlib.patches.Arc" title="matplotlib.patches.Arc"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.patches.Arc</span></code></a> patch is now correctly drawn between the given
angles.</p>
<p>Previously a circular arc was drawn and then stretched into an ellipse,
so the resulting arc did not lie between <em>theta1</em> and <em>theta2</em>.</p>
</div>
<div class="section" id="d-backend-no-longer-sets-the-backend">
<h3><code class="docutils literal"><span class="pre">-d$backend</span></code> no longer sets the backend<a class="headerlink" href="#d-backend-no-longer-sets-the-backend" title="Permalink to this headline">¶</a></h3>
<p>It is no longer possible to set the backend by passing <code class="docutils literal"><span class="pre">-d$backend</span></code>
at the command line. Use the <code class="docutils literal"><span class="pre">MPLBACKEND</span></code> environment variable
instead.</p>
</div>
<div class="section" id="path-intersects-bbox-always-treats-the-bounding-box-as-filled">
<h3>Path.intersects_bbox always treats the bounding box as filled<a class="headerlink" href="#path-intersects-bbox-always-treats-the-bounding-box-as-filled" title="Permalink to this headline">¶</a></h3>
<p>Previously, when <code class="docutils literal"><span class="pre">Path.intersects_bbox</span></code> was called with <code class="docutils literal"><span class="pre">filled</span></code> set to
<code class="docutils literal"><span class="pre">False</span></code>, it would treat both the path and the bounding box as unfilled. This
behavior was not well documented and it is usually not the desired behavior,
since bounding boxes are used to represent more complex shapes located inside
the bounding box. This behavior has now been changed: when <code class="docutils literal"><span class="pre">filled</span></code> is
<code class="docutils literal"><span class="pre">False</span></code>, the path will be treated as unfilled, but the bounding box is still
treated as filled. The old behavior was arguably an implementation bug.</p>
<p>When <code class="docutils literal"><span class="pre">Path.intersects_bbox</span></code> is called with <code class="docutils literal"><span class="pre">filled</span></code> set to <code class="docutils literal"><span class="pre">True</span></code>
(the default value), there is no change in behavior. For those rare cases where
<code class="docutils literal"><span class="pre">Path.intersects_bbox</span></code> was called with <code class="docutils literal"><span class="pre">filled</span></code> set to <code class="docutils literal"><span class="pre">False</span></code> and where
the old behavior is actually desired, the suggested workaround is to call
<code class="docutils literal"><span class="pre">Path.intersects_path</span></code> with a rectangle as the path:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">matplotlib.path</span> <span class="k">import</span> <span class="n">Path</span>
<span class="kn">from</span> <span class="nn">matplotlib.transforms</span> <span class="k">import</span> <span class="n">Bbox</span><span class="p">,</span> <span class="n">BboxTransformTo</span>
<span class="n">rect</span> <span class="o">=</span> <span class="n">Path</span><span class="o">.</span><span class="n">unit_rectangle</span><span class="p">()</span><span class="o">.</span><span class="n">transformed</span><span class="p">(</span><span class="n">BboxTransformTo</span><span class="p">(</span><span class="n">bbox</span><span class="p">))</span>
<span class="n">result</span> <span class="o">=</span> <span class="n">path</span><span class="o">.</span><span class="n">intersects_path</span><span class="p">(</span><span class="n">rect</span><span class="p">,</span> <span class="n">filled</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="wx-no-longer-calls-generates-idleevent-events-or-calls-idle-event">
<h3>WX no longer calls generates <code class="docutils literal"><span class="pre">IdleEvent</span></code> events or calls <code class="docutils literal"><span class="pre">idle_event</span></code><a class="headerlink" href="#wx-no-longer-calls-generates-idleevent-events-or-calls-idle-event" title="Permalink to this headline">¶</a></h3>
<p>Removed unused private method <code class="docutils literal"><span class="pre">_onIdle</span></code> from <code class="docutils literal"><span class="pre">FigureCanvasWx</span></code>.</p>
<p>The <code class="docutils literal"><span class="pre">IdleEvent</span></code> class and <code class="docutils literal"><span class="pre">FigureCanvasBase.idle_event</span></code> method
will be removed in 2.2</p>
</div>
<div class="section" id="correct-scaling-of-magnitude-spectrum">
<h3>Correct scaling of <code class="xref py py-func docutils literal"><span class="pre">magnitude_spectrum()</span></code><a class="headerlink" href="#correct-scaling-of-magnitude-spectrum" title="Permalink to this headline">¶</a></h3>
<p>The functions <a class="reference internal" href="mlab_api.html#matplotlib.mlab.magnitude_spectrum" title="matplotlib.mlab.magnitude_spectrum"><code class="xref py py-func docutils literal"><span class="pre">matplotlib.mlab.magnitude_spectrum()</span></code></a> and <a class="reference internal" href="_as_gen/matplotlib.pyplot.magnitude_spectrum.html#matplotlib.pyplot.magnitude_spectrum" title="matplotlib.pyplot.magnitude_spectrum"><code class="xref py py-func docutils literal"><span class="pre">matplotlib.pyplot.magnitude_spectrum()</span></code></a> implicitly assumed the sum
of windowing function values to be one. In Matplotlib and Numpy the
standard windowing functions are scaled to have maximum value of one,
which usually results in a sum of the order of n/2 for a n-point
signal. Thus the amplitude scaling <code class="xref py py-func docutils literal"><span class="pre">magnitude_spectrum()</span></code> was
off by that amount when using standard windowing functions (<a class="reference external" href="https://github.com/matplotlib/matplotlib/issues/8417">Bug 8417</a> ). Now the
behavior is consistent with <a class="reference internal" href="_as_gen/matplotlib.pyplot.psd.html#matplotlib.pyplot.psd" title="matplotlib.pyplot.psd"><code class="xref py py-func docutils literal"><span class="pre">matplotlib.pyplot.psd()</span></code></a> and
<a class="reference external" href="https://docs.scipy.org/doc/scipy/reference/generated/scipy.signal.welch.html#scipy.signal.welch" title="(in SciPy v1.0.0)"><code class="xref py py-func docutils literal"><span class="pre">scipy.signal.welch()</span></code></a>. The following example demonstrates the
new and old scaling:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="k">as</span> <span class="nn">plt</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="n">tau</span><span class="p">,</span> <span class="n">n</span> <span class="o">=</span> <span class="mi">10</span><span class="p">,</span> <span class="mi">1024</span> <span class="c1"># 10 second signal with 1024 points</span>
<span class="n">T</span> <span class="o">=</span> <span class="n">tau</span><span class="o">/</span><span class="n">n</span> <span class="c1"># sampling interval</span>
<span class="n">t</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="n">n</span><span class="p">)</span><span class="o">*</span><span class="n">T</span>
<span class="n">a</span> <span class="o">=</span> <span class="mi">4</span> <span class="c1"># amplitude</span>
<span class="n">x</span> <span class="o">=</span> <span class="n">a</span><span class="o">*</span><span class="n">np</span><span class="o">.</span><span class="n">sin</span><span class="p">(</span><span class="mi">40</span><span class="o">*</span><span class="n">np</span><span class="o">.</span><span class="n">pi</span><span class="o">*</span><span class="n">t</span><span class="p">)</span> <span class="c1"># 20 Hz sine with amplitude a</span>
<span class="c1"># New correct behavior: Amplitude at 20 Hz is a/2</span>
<span class="n">plt</span><span class="o">.</span><span class="n">magnitude_spectrum</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">Fs</span><span class="o">=</span><span class="mi">1</span><span class="o">/</span><span class="n">T</span><span class="p">,</span> <span class="n">sides</span><span class="o">=</span><span class="s1">'onesided'</span><span class="p">,</span> <span class="n">scale</span><span class="o">=</span><span class="s1">'linear'</span><span class="p">)</span>
<span class="c1"># Original behavior: Amplitude at 20 Hz is (a/2)*(n/2) for a Hanning window</span>
<span class="n">w</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">hanning</span><span class="p">(</span><span class="n">n</span><span class="p">)</span> <span class="c1"># default window is a Hanning window</span>
<span class="n">plt</span><span class="o">.</span><span class="n">magnitude_spectrum</span><span class="p">(</span><span class="n">x</span><span class="o">*</span><span class="n">np</span><span class="o">.</span><span class="n">sum</span><span class="p">(</span><span class="n">w</span><span class="p">),</span> <span class="n">Fs</span><span class="o">=</span><span class="mi">1</span><span class="o">/</span><span class="n">T</span><span class="p">,</span> <span class="n">sides</span><span class="o">=</span><span class="s1">'onesided'</span><span class="p">,</span> <span class="n">scale</span><span class="o">=</span><span class="s1">'linear'</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="change-to-signatures-of-bar-barh">
<h3>Change to signatures of <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.bar.html#matplotlib.axes.Axes.bar" title="matplotlib.axes.Axes.bar"><code class="xref py py-meth docutils literal"><span class="pre">bar()</span></code></a> & <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.barh.html#matplotlib.axes.Axes.barh" title="matplotlib.axes.Axes.barh"><code class="xref py py-meth docutils literal"><span class="pre">barh()</span></code></a><a class="headerlink" href="#change-to-signatures-of-bar-barh" title="Permalink to this headline">¶</a></h3>
<p>For 2.0 the <a class="reference internal" href="../users/dflt_style_changes.html#barbarh-align"><span class="std std-ref">default value of *align*</span></a> changed to
<code class="docutils literal"><span class="pre">'center'</span></code>. However this caused the signature of
<a class="reference internal" href="_as_gen/matplotlib.axes.Axes.bar.html#matplotlib.axes.Axes.bar" title="matplotlib.axes.Axes.bar"><code class="xref py py-meth docutils literal"><span class="pre">bar()</span></code></a> and
<a class="reference internal" href="_as_gen/matplotlib.axes.Axes.barh.html#matplotlib.axes.Axes.barh" title="matplotlib.axes.Axes.barh"><code class="xref py py-meth docutils literal"><span class="pre">barh()</span></code></a> to be misleading as the first parameters were
still <em>left</em> and <em>bottom</em> respectively:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">bar</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">height</span><span class="p">,</span> <span class="o">*</span><span class="p">,</span> <span class="n">align</span><span class="o">=</span><span class="s1">'center'</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="n">barh</span><span class="p">(</span><span class="n">bottom</span><span class="p">,</span> <span class="n">width</span><span class="p">,</span> <span class="o">*</span><span class="p">,</span> <span class="n">align</span><span class="o">=</span><span class="s1">'center'</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
</pre></div>
</div>
<p>despite behaving as the center in both cases. The methods now take
<code class="docutils literal"><span class="pre">*args,</span> <span class="pre">**kwargs</span></code> as input and are documented to have the primary
signatures of:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">bar</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">height</span><span class="p">,</span> <span class="o">*</span><span class="p">,</span> <span class="n">align</span><span class="o">=</span><span class="s1">'center'</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="n">barh</span><span class="p">(</span><span class="n">y</span><span class="p">,</span> <span class="n">width</span><span class="p">,</span> <span class="o">*</span><span class="p">,</span> <span class="n">align</span><span class="o">=</span><span class="s1">'center'</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
</pre></div>
</div>
<p>Passing <em>left</em> and <em>bottom</em> as keyword arguments to
<a class="reference internal" href="_as_gen/matplotlib.axes.Axes.bar.html#matplotlib.axes.Axes.bar" title="matplotlib.axes.Axes.bar"><code class="xref py py-meth docutils literal"><span class="pre">bar()</span></code></a> and
<a class="reference internal" href="_as_gen/matplotlib.axes.Axes.barh.html#matplotlib.axes.Axes.barh" title="matplotlib.axes.Axes.barh"><code class="xref py py-meth docutils literal"><span class="pre">barh()</span></code></a> respectively will warn.
Support will be removed in Matplotlib 3.0.</p>
</div>
<div class="section" id="font-cache-as-json">
<h3>Font cache as json<a class="headerlink" href="#font-cache-as-json" title="Permalink to this headline">¶</a></h3>
<p>The font cache is now saved as json, rather than a pickle.</p>
</div>
<div class="section" id="invalid-non-finite-axis-limit-error">
<h3>Invalid (Non-finite) Axis Limit Error<a class="headerlink" href="#invalid-non-finite-axis-limit-error" title="Permalink to this headline">¶</a></h3>
<p>When using <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.set_xlim.html#matplotlib.axes.Axes.set_xlim" title="matplotlib.axes.Axes.set_xlim"><code class="xref py py-func docutils literal"><span class="pre">set_xlim()</span></code></a> and
<a class="reference internal" href="_as_gen/matplotlib.axes.Axes.set_ylim.html#matplotlib.axes.Axes.set_ylim" title="matplotlib.axes.Axes.set_ylim"><code class="xref py py-func docutils literal"><span class="pre">set_ylim()</span></code></a>, passing non-finite values now
results in a <code class="docutils literal"><span class="pre">ValueError</span></code>. The previous behavior resulted in the
limits being erroneously reset to <code class="docutils literal"><span class="pre">(-0.001,</span> <span class="pre">0.001)</span></code>.</p>
</div>
<div class="section" id="scatter-and-collection-offsets-are-no-longer-implicitly-flattened">
<h3><code class="docutils literal"><span class="pre">scatter</span></code> and <code class="docutils literal"><span class="pre">Collection</span></code> offsets are no longer implicitly flattened<a class="headerlink" href="#scatter-and-collection-offsets-are-no-longer-implicitly-flattened" title="Permalink to this headline">¶</a></h3>
<p><a class="reference internal" href="collections_api.html#matplotlib.collections.Collection" title="matplotlib.collections.Collection"><code class="xref py py-obj docutils literal"><span class="pre">Collection</span></code></a> (and thus both 2D
<a class="reference internal" href="_as_gen/matplotlib.axes.Axes.scatter.html#matplotlib.axes.Axes.scatter" title="matplotlib.axes.Axes.scatter"><code class="xref py py-obj docutils literal"><span class="pre">scatter</span></code></a> and 3D
<a class="reference internal" href="_as_gen/mpl_toolkits.mplot3d.axes3d.Axes3D.html#mpl_toolkits.mplot3d.axes3d.Axes3D.scatter" title="mpl_toolkits.mplot3d.axes3d.Axes3D.scatter"><code class="xref py py-obj docutils literal"><span class="pre">scatter</span></code></a>) no
longer implicitly flattens its offsets. As a consequence, <code class="docutils literal"><span class="pre">scatter</span></code>’s <code class="docutils literal"><span class="pre">x</span></code>
and <code class="docutils literal"><span class="pre">y</span></code> arguments can no longer be 2+-dimensional arrays.</p>
</div>
<div class="section" id="deprecations">
<h3>Deprecations<a class="headerlink" href="#deprecations" title="Permalink to this headline">¶</a></h3>
<div class="section" id="graphicscontextbase-s-linestyle-property">
<h4><code class="docutils literal"><span class="pre">GraphicsContextBase</span></code>’s <code class="docutils literal"><span class="pre">linestyle</span></code> property.<a class="headerlink" href="#graphicscontextbase-s-linestyle-property" title="Permalink to this headline">¶</a></h4>
<p>The <code class="docutils literal"><span class="pre">GraphicsContextBase.get_linestyle</span></code> and
<code class="docutils literal"><span class="pre">GraphicsContextBase.set_linestyle</span></code> methods, which had no effect,
have been deprecated. All of the backends Matplotlib ships use
<code class="docutils literal"><span class="pre">GraphicsContextBase.get_dashes</span></code> and
<code class="docutils literal"><span class="pre">GraphicsContextBase.set_dashes</span></code> which are more general.
Third-party backends should also migrate to the <code class="docutils literal"><span class="pre">*_dashes</span></code> methods.</p>
</div>
<div class="section" id="navigationtoolbar2-dynamic-update">
<h4><code class="docutils literal"><span class="pre">NavigationToolbar2.dynamic_update</span></code><a class="headerlink" href="#navigationtoolbar2-dynamic-update" title="Permalink to this headline">¶</a></h4>
<p>Use <code class="xref py py-meth docutils literal"><span class="pre">draw_idle()</span></code> method on the <code class="docutils literal"><span class="pre">Canvas</span></code> instance instead.</p>
</div>
<div class="section" id="testing">
<h4>Testing<a class="headerlink" href="#testing" title="Permalink to this headline">¶</a></h4>
<p><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.testing.noseclasses</span></code> is deprecated and will be removed in 2.3</p>
</div>
<div class="section" id="engformatter-num-arg-as-string">
<h4><code class="docutils literal"><span class="pre">EngFormatter</span></code> <em>num</em> arg as string<a class="headerlink" href="#engformatter-num-arg-as-string" title="Permalink to this headline">¶</a></h4>
<p>Passing a string as <em>num</em> argument when calling an instance of
<a class="reference internal" href="ticker_api.html#matplotlib.ticker.EngFormatter" title="matplotlib.ticker.EngFormatter"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.ticker.EngFormatter</span></code></a> is deprecated and will be removed in 2.3.</p>
</div>
<div class="section" id="mpl-toolkits-axes-grid-module">
<h4><code class="docutils literal"><span class="pre">mpl_toolkits.axes_grid</span></code> module<a class="headerlink" href="#mpl-toolkits-axes-grid-module" title="Permalink to this headline">¶</a></h4>
<p>All functionally from <code class="xref py py-obj docutils literal"><span class="pre">mpl_toolkits.axes_grid</span></code> can be found in either
<a class="reference internal" href="_as_gen/mpl_toolkits.axes_grid1.html#module-mpl_toolkits.axes_grid1" title="mpl_toolkits.axes_grid1"><code class="xref py py-obj docutils literal"><span class="pre">mpl_toolkits.axes_grid1</span></code></a> or <a class="reference internal" href="_as_gen/mpl_toolkits.axisartist.html#module-mpl_toolkits.axisartist" title="mpl_toolkits.axisartist"><code class="xref py py-obj docutils literal"><span class="pre">mpl_toolkits.axisartist</span></code></a>. Axes classes
from <code class="xref py py-obj docutils literal"><span class="pre">mpl_toolkits.axes_grid</span></code> based on <code class="xref py py-obj docutils literal"><span class="pre">Axis</span></code> from
<a class="reference internal" href="_as_gen/mpl_toolkits.axisartist.html#module-mpl_toolkits.axisartist" title="mpl_toolkits.axisartist"><code class="xref py py-obj docutils literal"><span class="pre">mpl_toolkits.axisartist</span></code></a> can be found in <a class="reference internal" href="_as_gen/mpl_toolkits.axisartist.html#module-mpl_toolkits.axisartist" title="mpl_toolkits.axisartist"><code class="xref py py-obj docutils literal"><span class="pre">mpl_toolkits.axisartist</span></code></a>.</p>
</div>
<div class="section" id="axes-collision-in-figure-add-axes">
<h4><code class="docutils literal"><span class="pre">Axes</span></code> collision in <code class="docutils literal"><span class="pre">Figure.add_axes</span></code><a class="headerlink" href="#axes-collision-in-figure-add-axes" title="Permalink to this headline">¶</a></h4>
<p>Adding an axes instance to a figure by using the same arguments as for
a previous axes instance currently reuses the earlier instance. This
behavior has been deprecated in Matplotlib 2.1. In a future version, a
<em>new</em> instance will always be created and returned. Meanwhile, in such
a situation, a deprecation warning is raised by
<a class="reference internal" href="_as_gen/matplotlib.figure.AxesStack.html#matplotlib.figure.AxesStack" title="matplotlib.figure.AxesStack"><code class="xref py py-class docutils literal"><span class="pre">AxesStack</span></code></a>.</p>
<p>This warning can be suppressed, and the future behavior ensured, by passing
a <em>unique</em> label to each axes instance. See the docstring of
<a class="reference internal" href="_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.add_axes" title="matplotlib.figure.Figure.add_axes"><code class="xref py py-meth docutils literal"><span class="pre">add_axes()</span></code></a> for more information.</p>
<p>Additional details on the rationale behind this deprecation can be found
in <a class="reference external" href="https://github.com/matplotlib/matplotlib/issues/7377/">#7377</a> and <a class="reference external" href="https://github.com/matplotlib/matplotlib/issues/9024/">#9024</a>.</p>
</div>
<div class="section" id="former-validators-for-contour-negative-linestyle">
<h4>Former validators for <code class="docutils literal"><span class="pre">contour.negative_linestyle</span></code><a class="headerlink" href="#former-validators-for-contour-negative-linestyle" title="Permalink to this headline">¶</a></h4>
<p>The former public validation functions <code class="docutils literal"><span class="pre">validate_negative_linestyle</span></code>
and <code class="docutils literal"><span class="pre">validate_negative_linestyle_legacy</span></code> will be deprecated in 2.1 and
may be removed in 2.3. There are no public functions to replace them.</p>
</div>
<div class="section" id="cbook">
<h4><code class="docutils literal"><span class="pre">cbook</span></code><a class="headerlink" href="#cbook" title="Permalink to this headline">¶</a></h4>
<p>Many unused or near-unused <a class="reference internal" href="cbook_api.html#module-matplotlib.cbook" title="matplotlib.cbook"><code class="xref py py-mod docutils literal"><span class="pre">matplotlib.cbook</span></code></a> functions and
classes have been deprecated: <code class="docutils literal"><span class="pre">converter</span></code>, <code class="docutils literal"><span class="pre">tostr</span></code>,
<code class="docutils literal"><span class="pre">todatetime</span></code>, <code class="docutils literal"><span class="pre">todate</span></code>, <code class="docutils literal"><span class="pre">tofloat</span></code>, <code class="docutils literal"><span class="pre">toint</span></code>, <code class="docutils literal"><span class="pre">unique</span></code>,
<code class="docutils literal"><span class="pre">is_string_like</span></code>, <code class="docutils literal"><span class="pre">is_sequence_of_strings</span></code>, <code class="docutils literal"><span class="pre">is_scalar</span></code>,
<code class="docutils literal"><span class="pre">Sorter</span></code>, <code class="docutils literal"><span class="pre">Xlator</span></code>, <code class="docutils literal"><span class="pre">soundex</span></code>, <code class="docutils literal"><span class="pre">Null</span></code>, <code class="docutils literal"><span class="pre">dict_delall</span></code>,
<code class="docutils literal"><span class="pre">RingBuffer</span></code>, <code class="docutils literal"><span class="pre">get_split_ind</span></code>, <code class="docutils literal"><span class="pre">wrap</span></code>,
<code class="docutils literal"><span class="pre">get_recursive_filelist</span></code>, <code class="docutils literal"><span class="pre">pieces</span></code>, <code class="docutils literal"><span class="pre">exception_to_str</span></code>,
<code class="docutils literal"><span class="pre">allequal</span></code>, <code class="docutils literal"><span class="pre">alltrue</span></code>, <code class="docutils literal"><span class="pre">onetrue</span></code>, <code class="docutils literal"><span class="pre">allpairs</span></code>, <code class="docutils literal"><span class="pre">finddir</span></code>,
<code class="docutils literal"><span class="pre">reverse_dict</span></code>, <code class="docutils literal"><span class="pre">restrict_dict</span></code>, <code class="docutils literal"><span class="pre">issubclass_safe</span></code>,
<code class="docutils literal"><span class="pre">recursive_remove</span></code>, <code class="docutils literal"><span class="pre">unmasked_index_ranges</span></code>.</p>
</div>
</div>
<div class="section" id="code-removal">
<h3>Code Removal<a class="headerlink" href="#code-removal" title="Permalink to this headline">¶</a></h3>
<div class="section" id="qt4-compat-py">
<h4>qt4_compat.py<a class="headerlink" href="#qt4-compat-py" title="Permalink to this headline">¶</a></h4>
<p>Moved to <code class="docutils literal"><span class="pre">qt_compat.py</span></code>. Renamed because it now handles Qt5 as well.</p>
</div>
<div class="section" id="previously-deprecated-methods">
<h4>Previously Deprecated methods<a class="headerlink" href="#previously-deprecated-methods" title="Permalink to this headline">¶</a></h4>
<p>The <code class="docutils literal"><span class="pre">GraphicsContextBase.set_graylevel</span></code>, <code class="docutils literal"><span class="pre">FigureCanvasBase.onHilite</span></code> and
<code class="docutils literal"><span class="pre">mpl_toolkits.axes_grid1.mpl_axes.Axes.toggle_axisline</span></code> methods have been
removed.</p>
<p>The <code class="docutils literal"><span class="pre">ArtistInspector.findobj</span></code> method, which was never working due to the lack
of a <code class="docutils literal"><span class="pre">get_children</span></code> method, has been removed.</p>
<p>The deprecated <code class="docutils literal"><span class="pre">point_in_path</span></code>, <code class="docutils literal"><span class="pre">get_path_extents</span></code>,
<code class="docutils literal"><span class="pre">point_in_path_collection</span></code>, <code class="docutils literal"><span class="pre">path_intersects_path</span></code>,
<code class="docutils literal"><span class="pre">convert_path_to_polygons</span></code>, <code class="docutils literal"><span class="pre">cleanup_path</span></code> and <code class="docutils literal"><span class="pre">clip_path_to_rect</span></code>
functions in the <code class="docutils literal"><span class="pre">matplotlib.path</span></code> module have been removed. Their
functionality remains exposed as methods on the <code class="docutils literal"><span class="pre">Path</span></code> class.</p>
<p>The deprecated <code class="docutils literal"><span class="pre">Artist.get_axes</span></code> and <code class="docutils literal"><span class="pre">Artist.set_axes</span></code> methods
have been removed</p>
<p>The <code class="docutils literal"><span class="pre">matplotlib.backends.backend_ps.seq_allequal</span></code> function has been removed.
Use <code class="docutils literal"><span class="pre">np.array_equal</span></code> instead.</p>
<p>The deprecated <code class="docutils literal"><span class="pre">matplotlib.rcsetup.validate_maskedarray</span></code>,
<code class="docutils literal"><span class="pre">matplotlib.rcsetup.deprecate_savefig_extension</span></code> and
<code class="docutils literal"><span class="pre">matplotlib.rcsetup.validate_tkpythoninspect</span></code> functions, and associated
<code class="docutils literal"><span class="pre">savefig.extension</span></code> and <code class="docutils literal"><span class="pre">tk.pythoninspect</span></code> rcparams entries have been
removed.</p>
<p>The kwarg <code class="docutils literal"><span class="pre">resolution</span></code> of
<a class="reference internal" href="projections_api.html#matplotlib.projections.polar.PolarAxes" title="matplotlib.projections.polar.PolarAxes"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.projections.polar.PolarAxes</span></code></a> has been removed. It
has deprecation with no effect from version <code class="xref py py-obj docutils literal"><span class="pre">0.98.x</span></code>.</p>
</div>
<div class="section" id="axes-set-aspect-normal">
<h4><code class="docutils literal"><span class="pre">Axes.set_aspect("normal")</span></code><a class="headerlink" href="#axes-set-aspect-normal" title="Permalink to this headline">¶</a></h4>
<p>Support for setting an <code class="docutils literal"><span class="pre">Axes</span></code>’s aspect to <code class="docutils literal"><span class="pre">"normal"</span></code> has been
removed, in favor of the synonym <code class="docutils literal"><span class="pre">"auto"</span></code>.</p>
</div>
<div class="section" id="shading-kwarg-to-pcolor">
<h4><code class="docutils literal"><span class="pre">shading</span></code> kwarg to <code class="docutils literal"><span class="pre">pcolor</span></code><a class="headerlink" href="#shading-kwarg-to-pcolor" title="Permalink to this headline">¶</a></h4>
<p>The <code class="docutils literal"><span class="pre">shading</span></code> kwarg to <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.pcolor.html#matplotlib.axes.Axes.pcolor" title="matplotlib.axes.Axes.pcolor"><code class="xref py py-obj docutils literal"><span class="pre">pcolor</span></code></a> has been
removed. Set <code class="docutils literal"><span class="pre">edgecolors</span></code> appropriately instead.</p>
</div>
<div class="section" id="functions-removed-from-the-lines-module">
<h4>Functions removed from the <code class="xref py py-obj docutils literal"><span class="pre">lines</span></code> module<a class="headerlink" href="#functions-removed-from-the-lines-module" title="Permalink to this headline">¶</a></h4>
<p>The <a class="reference internal" href="lines_api.html#module-matplotlib.lines" title="matplotlib.lines"><code class="xref py py-mod docutils literal"><span class="pre">matplotlib.lines</span></code></a> module no longer imports the
<code class="docutils literal"><span class="pre">pts_to_prestep</span></code>, <code class="docutils literal"><span class="pre">pts_to_midstep</span></code> and <code class="docutils literal"><span class="pre">pts_to_poststep</span></code>
functions from <a class="reference internal" href="cbook_api.html#module-matplotlib.cbook" title="matplotlib.cbook"><code class="xref py py-mod docutils literal"><span class="pre">matplotlib.cbook</span></code></a>.</p>
</div>
<div class="section" id="pdf-backend-functions">
<h4>PDF backend functions<a class="headerlink" href="#pdf-backend-functions" title="Permalink to this headline">¶</a></h4>
<p>The methods <code class="docutils literal"><span class="pre">embedTeXFont</span></code> and <code class="docutils literal"><span class="pre">tex_font_mapping</span></code> of
<code class="xref py py-class docutils literal"><span class="pre">matplotlib.backqend_pdf.PdfFile</span></code> have been removed. It is
unlikely that external users would have called these methods, which
are related to the font system internal to the PDF backend.</p>
</div>
<div class="section" id="matplotlib-delaunay">
<h4>matplotlib.delaunay<a class="headerlink" href="#matplotlib-delaunay" title="Permalink to this headline">¶</a></h4>
<p>Remove the delaunay triangulation code which is now handled by Qhull
via <a class="reference internal" href="tri_api.html#module-matplotlib.tri" title="matplotlib.tri"><code class="xref py py-mod docutils literal"><span class="pre">matplotlib.tri</span></code></a>.</p>
</div>
</div>
</div>
<div class="section" id="api-changes-in-2-0-1">
<h2>API Changes in 2.0.1<a class="headerlink" href="#api-changes-in-2-0-1" title="Permalink to this headline">¶</a></h2>
<div class="section" id="extensions-to-matplotlib-backend-bases-graphicscontextbase">
<h3>Extensions to <a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase" title="matplotlib.backend_bases.GraphicsContextBase"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.backend_bases.GraphicsContextBase</span></code></a><a class="headerlink" href="#extensions-to-matplotlib-backend-bases-graphicscontextbase" title="Permalink to this headline">¶</a></h3>
<p>To better support controlling the color of hatches, the method
<a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase.set_hatch_color" title="matplotlib.backend_bases.GraphicsContextBase.set_hatch_color"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.backend_bases.GraphicsContextBase.set_hatch_color</span></code></a> was
added to the expected API of <code class="docutils literal"><span class="pre">GraphicsContext</span></code> classes. Calls to
this method are currently wrapped with a <code class="docutils literal"><span class="pre">try:...except</span> <span class="pre">Attribute:</span></code>
block to preserve back-compatibility with any third-party backends
which do not extend <a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase" title="matplotlib.backend_bases.GraphicsContextBase"><code class="xref py py-obj docutils literal"><span class="pre">GraphicsContextBase</span></code></a>.</p>
<p>This value can be accessed in the backends via
<a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase.get_hatch_color" title="matplotlib.backend_bases.GraphicsContextBase.get_hatch_color"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.backend_bases.GraphicsContextBase.get_hatch_color</span></code></a> (which
was added in 2.0 see <a class="reference internal" href="../users/prev_whats_new/whats_new_2.0.0.html#gc-get-hatch-color-wn"><span class="std std-ref">Extension to matplotlib.backend_bases.GraphicsContextBase</span></a>) and should be used
to color the hatches.</p>
<p>In the future there may also be <code class="docutils literal"><span class="pre">hatch_linewidth</span></code> and
<code class="docutils literal"><span class="pre">hatch_density</span></code> related methods added. It is encouraged, but not
required that third-party backends extend
<a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase" title="matplotlib.backend_bases.GraphicsContextBase"><code class="xref py py-obj docutils literal"><span class="pre">GraphicsContextBase</span></code></a> to make adapting to
these changes easier.</p>
</div>
<div class="section" id="afm-get-fontconfig-fonts-returns-a-list-of-paths-and-does-not-check-for-existence">
<h3><code class="xref py py-obj docutils literal"><span class="pre">afm.get_fontconfig_fonts</span></code> returns a list of paths and does not check for existence<a class="headerlink" href="#afm-get-fontconfig-fonts-returns-a-list-of-paths-and-does-not-check-for-existence" title="Permalink to this headline">¶</a></h3>
<p><code class="xref py py-obj docutils literal"><span class="pre">afm.get_fontconfig_fonts</span></code> used to return a set of paths encoded as a
<code class="docutils literal"><span class="pre">{key:</span> <span class="pre">1,</span> <span class="pre">...}</span></code> dict, and checked for the existence of the paths. It now
returns a list and dropped the existence check, as the same check is performed
by the caller (<code class="xref py py-obj docutils literal"><span class="pre">afm.findSystemFonts</span></code>) as well.</p>
</div>
<div class="section" id="bar-now-returns-rectangles-of-negative-height-or-width-if-the-corresponding-input-is-negative">
<h3><code class="xref py py-obj docutils literal"><span class="pre">bar</span></code> now returns rectangles of negative height or width if the corresponding input is negative<a class="headerlink" href="#bar-now-returns-rectangles-of-negative-height-or-width-if-the-corresponding-input-is-negative" title="Permalink to this headline">¶</a></h3>
<p><code class="xref py py-obj docutils literal"><span class="pre">plt.bar</span></code> used to normalize the coordinates of the rectangles that it created,
to keep their height and width positives, even if the corresponding input was
negative. This normalization has been removed to permit a simpler computation
of the correct <code class="xref py py-obj docutils literal"><span class="pre">sticky_edges</span></code> to use.</p>
</div>
<div class="section" id="do-not-clip-line-width-when-scaling-dashes">
<h3>Do not clip line width when scaling dashes<a class="headerlink" href="#do-not-clip-line-width-when-scaling-dashes" title="Permalink to this headline">¶</a></h3>
<p>The algorithm to scale dashes was changed to no longer clip the
scaling factor: the dash patterns now continue to shrink at thin line widths.
If the line width is smaller than the effective pixel size, this may result in
dashed lines turning into solid gray-ish lines. This also required slightly
tweaking the default patterns for ‘–’, ‘:’, and ‘.-‘ so that with the default
line width the final patterns would not change.</p>
<p>There is no way to restore the old behavior.</p>
</div>
<div class="section" id="deprecate-vega-color-maps">
<h3>Deprecate ‘Vega’ color maps<a class="headerlink" href="#deprecate-vega-color-maps" title="Permalink to this headline">¶</a></h3>
<p>The “Vega” colormaps are deprecated in Matplotlib 2.0.1 and will be
removed in Matplotlib 2.2. Use the “tab” colormaps instead: “tab10”,
“tab20”, “tab20b”, “tab20c”.</p>
</div>
</div>
<div class="section" id="api-changes-in-2-0-0">
<h2>API Changes in 2.0.0<a class="headerlink" href="#api-changes-in-2-0-0" title="Permalink to this headline">¶</a></h2>
<div class="section" id="deprecation-and-removal">
<h3>Deprecation and removal<a class="headerlink" href="#deprecation-and-removal" title="Permalink to this headline">¶</a></h3>
<div class="section" id="color-of-axes">
<h4>Color of Axes<a class="headerlink" href="#color-of-axes" title="Permalink to this headline">¶</a></h4>
<p>The <code class="docutils literal"><span class="pre">axisbg</span></code> and <code class="docutils literal"><span class="pre">axis_bgcolor</span></code> properties on <code class="docutils literal"><span class="pre">Axes</span></code> have been
deprecated in favor of <code class="docutils literal"><span class="pre">facecolor</span></code>.</p>
</div>
<div class="section" id="gtk-and-gdk-backends-deprecated">
<h4>GTK and GDK backends deprecated<a class="headerlink" href="#gtk-and-gdk-backends-deprecated" title="Permalink to this headline">¶</a></h4>
<p>The GDK and GTK backends have been deprecated. These obsolete backends
allow figures to be rendered via the GDK API to files and GTK2 figures.
They are untested and known to be broken, and their use has been
discouraged for some time. Instead, use the <code class="xref py py-obj docutils literal"><span class="pre">GTKAgg</span></code> and <code class="xref py py-obj docutils literal"><span class="pre">GTKCairo</span></code>
backends for rendering to GTK2 windows.</p>
</div>
<div class="section" id="wx-backend-deprecated">
<h4>WX backend deprecated<a class="headerlink" href="#wx-backend-deprecated" title="Permalink to this headline">¶</a></h4>
<p>The WX backend has been deprecated. It is untested, and its
use has been discouraged for some time. Instead, use the <code class="xref py py-obj docutils literal"><span class="pre">WXAgg</span></code>
backend for rendering figures to WX windows.</p>
</div>
<div class="section" id="cocoaagg-backend-removed">
<h4>CocoaAgg backend removed<a class="headerlink" href="#cocoaagg-backend-removed" title="Permalink to this headline">¶</a></h4>
<p>The deprecated and not fully functional CocoaAgg backend has been removed.</p>
</div>
<div class="section" id="round-removed-from-tkagg-backend">
<h4><a class="reference external" href="https://docs.python.org/3/library/functions.html#round" title="(in Python v3.6)"><code class="xref py py-obj docutils literal"><span class="pre">round</span></code></a> removed from TkAgg Backend<a class="headerlink" href="#round-removed-from-tkagg-backend" title="Permalink to this headline">¶</a></h4>
<p>The TkAgg backend had its own implementation of the <a class="reference external" href="https://docs.python.org/3/library/functions.html#round" title="(in Python v3.6)"><code class="xref py py-obj docutils literal"><span class="pre">round</span></code></a> function. This
was unused internally and has been removed. Instead, use either the
<a class="reference external" href="https://docs.python.org/3/library/functions.html#round" title="(in Python v3.6)"><code class="xref py py-obj docutils literal"><span class="pre">round</span></code></a> builtin function or <code class="xref py py-obj docutils literal"><span class="pre">numpy.round</span></code>.</p>
</div>
<div class="section" id="hold-functionality-deprecated">
<h4>‘hold’ functionality deprecated<a class="headerlink" href="#hold-functionality-deprecated" title="Permalink to this headline">¶</a></h4>
<p>The ‘hold’ keyword argument and all functions and methods related
to it are deprecated, along with the ‘axes.hold’ <code class="xref py py-obj docutils literal"><span class="pre">rcParams</span></code> entry.
The behavior will remain consistent with the default <code class="docutils literal"><span class="pre">hold=True</span></code>
state that has long been in place. Instead of using a function
or keyword argument (<code class="docutils literal"><span class="pre">hold=False</span></code>) to change that behavior,
explicitly clear the axes or figure as needed prior to subsequent
plotting commands.</p>
</div>
</div>
<div class="section" id="artist-update-has-return-value">
<h3><code class="xref py py-obj docutils literal"><span class="pre">Artist.update</span></code> has return value<a class="headerlink" href="#artist-update-has-return-value" title="Permalink to this headline">¶</a></h3>
<p>The methods <a class="reference internal" href="_as_gen/matplotlib.artist.Artist.set.html#matplotlib.artist.Artist.set" title="matplotlib.artist.Artist.set"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.artist.Artist.set</span></code></a>,
<code class="xref py py-obj docutils literal"><span class="pre">matplotlib.Artist.update</span></code>, and the function <a class="reference internal" href="_as_gen/matplotlib.artist.setp.html#matplotlib.artist.setp" title="matplotlib.artist.setp"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.artist.setp</span></code></a>
now use a common codepath to look up how to update the given artist
properties (either using the setter methods or an attribute/property).</p>
<p>The behavior of <code class="xref py py-obj docutils literal"><span class="pre">matplotlib.Artist.update</span></code> is slightly changed to
return a list of the values returned from the setter methods to avoid
changing the API of <code class="xref py py-obj docutils literal"><span class="pre">matplotlib.Artist.set</span></code> and
<a class="reference internal" href="_as_gen/matplotlib.artist.setp.html#matplotlib.artist.setp" title="matplotlib.artist.setp"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.artist.setp</span></code></a>.</p>
<p>The keys passed into <code class="xref py py-obj docutils literal"><span class="pre">matplotlib.Artist.update</span></code> are now converted to
lower case before being processed, to match the behavior of
<code class="xref py py-obj docutils literal"><span class="pre">matplotlib.Artist.set</span></code> and <a class="reference internal" href="_as_gen/matplotlib.artist.setp.html#matplotlib.artist.setp" title="matplotlib.artist.setp"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.artist.setp</span></code></a>. This should not
break any user code because there are no set methods with capitals in
their names, but this puts a constraint on naming properties in the future.</p>
</div>
<div class="section" id="legend-initializers-gain-edgecolor-and-facecolor-kwargs">
<h3><code class="xref py py-obj docutils literal"><span class="pre">Legend</span></code> initializers gain edgecolor and facecolor kwargs<a class="headerlink" href="#legend-initializers-gain-edgecolor-and-facecolor-kwargs" title="Permalink to this headline">¶</a></h3>
<p>The <a class="reference internal" href="legend_api.html#matplotlib.legend.Legend" title="matplotlib.legend.Legend"><code class="xref py py-class docutils literal"><span class="pre">Legend</span></code></a> background patch (or ‘frame’)
can have its <code class="docutils literal"><span class="pre">edgecolor</span></code> and <code class="docutils literal"><span class="pre">facecolor</span></code> determined by the
corresponding keyword arguments to the <a class="reference internal" href="legend_api.html#matplotlib.legend.Legend" title="matplotlib.legend.Legend"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.legend.Legend</span></code></a>
initializer, or to any of the methods or functions that call that
initializer. If left to their default values of <a class="reference external" href="https://docs.python.org/3/library/constants.html#None" title="(in Python v3.6)"><code class="xref py py-obj docutils literal"><span class="pre">None</span></code></a>, their values
will be taken from <code class="docutils literal"><span class="pre">matplotlib.rcParams</span></code>. The previously-existing
<code class="docutils literal"><span class="pre">framealpha</span></code> kwarg still controls the alpha transparency of the
patch.</p>
</div>
<div class="section" id="qualitative-colormaps">
<h3>Qualitative colormaps<a class="headerlink" href="#qualitative-colormaps" title="Permalink to this headline">¶</a></h3>
<p>Colorbrewer’s qualitative/discrete colormaps (“Accent”, “Dark2”, “Paired”,
“Pastel1”, “Pastel2”, “Set1”, “Set2”, “Set3”) are now implemented as
<code class="docutils literal"><span class="pre">ListedColormap</span></code> instead of <code class="docutils literal"><span class="pre">LinearSegmentedColormap</span></code>.</p>
<p>To use these for images where categories are specified as integers, for
instance, use:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">plt</span><span class="o">.</span><span class="n">imshow</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">cmap</span><span class="o">=</span><span class="s1">'Dark2'</span><span class="p">,</span> <span class="n">norm</span><span class="o">=</span><span class="n">colors</span><span class="o">.</span><span class="n">NoNorm</span><span class="p">())</span>
</pre></div>
</div>
</div>
<div class="section" id="change-in-the-draw-image-backend-api">
<h3>Change in the <code class="docutils literal"><span class="pre">draw_image</span></code> backend API<a class="headerlink" href="#change-in-the-draw-image-backend-api" title="Permalink to this headline">¶</a></h3>
<p>The <code class="docutils literal"><span class="pre">draw_image</span></code> method implemented by backends has changed its interface.</p>
<p>This change is only relevant if the backend declares that it is able
to transform images by returning <code class="docutils literal"><span class="pre">True</span></code> from <code class="docutils literal"><span class="pre">option_scale_image</span></code>.
See the <code class="docutils literal"><span class="pre">draw_image</span></code> docstring for more information.</p>
</div>
<div class="section" id="matplotlib-ticker-linearlocator-algorithm-update">
<h3><a class="reference internal" href="ticker_api.html#matplotlib.ticker.LinearLocator" title="matplotlib.ticker.LinearLocator"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.ticker.LinearLocator</span></code></a> algorithm update<a class="headerlink" href="#matplotlib-ticker-linearlocator-algorithm-update" title="Permalink to this headline">¶</a></h3>
<p>The <code class="docutils literal"><span class="pre">matplotlib.ticker.LinearLocator</span></code> is used to define the range and
location of axis ticks when the user wants an exact number of ticks.
<code class="docutils literal"><span class="pre">LinearLocator</span></code> thus differs from the default locator <code class="docutils literal"><span class="pre">MaxNLocator</span></code>,
for which the user specifies a maximum number of intervals rather than
a precise number of ticks.</p>
<p>The view range algorithm in <code class="docutils literal"><span class="pre">matplotlib.ticker.LinearLocator</span></code> has been
changed so that more convenient tick locations are chosen. The new algorithm
returns a plot view range that is a multiple of the user-requested number of
ticks. This ensures tick marks will be located at whole integers more
consistently. For example, when both y-axes of a``twinx`` plot use
<code class="docutils literal"><span class="pre">matplotlib.ticker.LinearLocator</span></code> with the same number of ticks,
their y-tick locations and grid lines will coincide.</p>
</div>
<div class="section" id="matplotlib-ticker-loglocator-gains-numticks-kwarg">
<h3><a class="reference internal" href="ticker_api.html#matplotlib.ticker.LogLocator" title="matplotlib.ticker.LogLocator"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.ticker.LogLocator</span></code></a> gains numticks kwarg<a class="headerlink" href="#matplotlib-ticker-loglocator-gains-numticks-kwarg" title="Permalink to this headline">¶</a></h3>
<p>The maximum number of ticks generated by the
<a class="reference internal" href="ticker_api.html#matplotlib.ticker.LogLocator" title="matplotlib.ticker.LogLocator"><code class="xref py py-obj docutils literal"><span class="pre">LogLocator</span></code></a> can now be controlled explicitly
via setting the new ‘numticks’ kwarg to an integer. By default
the kwarg is None which internally sets it to the ‘auto’ string,
triggering a new algorithm for adjusting the maximum according
to the axis length relative to the ticklabel font size.</p>
</div>
<div class="section" id="matplotlib-ticker-logformatter-two-new-kwargs">
<h3><a class="reference internal" href="ticker_api.html#matplotlib.ticker.LogFormatter" title="matplotlib.ticker.LogFormatter"><code class="xref py py-obj docutils literal"><span class="pre">matplotlib.ticker.LogFormatter</span></code></a>: two new kwargs<a class="headerlink" href="#matplotlib-ticker-logformatter-two-new-kwargs" title="Permalink to this headline">¶</a></h3>
<p>Previously, minor ticks on log-scaled axes were not labeled by
default. An algorithm has been added to the
<a class="reference internal" href="ticker_api.html#matplotlib.ticker.LogFormatter" title="matplotlib.ticker.LogFormatter"><code class="xref py py-obj docutils literal"><span class="pre">LogFormatter</span></code></a> to control the labeling of
ticks between integer powers of the base. The algorithm uses
two parameters supplied in a kwarg tuple named ‘minor_thresholds’.
See the docstring for further explanation.</p>
<p>To improve support for axes using <code class="xref py py-obj docutils literal"><span class="pre">SymmetricLogLocator</span></code>,
a ‘linthresh’ kwarg was added.</p>
</div>
<div class="section" id="new-defaults-for-3d-quiver-function-in-mpl-toolkits-mplot3d-axes3d-py">
<h3>New defaults for 3D quiver function in mpl_toolkits.mplot3d.axes3d.py<a class="headerlink" href="#new-defaults-for-3d-quiver-function-in-mpl-toolkits-mplot3d-axes3d-py" title="Permalink to this headline">¶</a></h3>
<p>Matplotlib has both a 2D and a 3D <code class="docutils literal"><span class="pre">quiver</span></code> function. These changes
affect only the 3D function and make the default behavior of the 3D
function match the 2D version. There are two changes:</p>
<ol class="arabic simple">
<li>The 3D quiver function previously normalized the arrows to be the
same length, which makes it unusable for situations where the
arrows should be different lengths and does not match the behavior
of the 2D function. This normalization behavior is now controlled
with the <code class="docutils literal"><span class="pre">normalize</span></code> keyword, which defaults to False.</li>
<li>The <code class="docutils literal"><span class="pre">pivot</span></code> keyword now defaults to <code class="docutils literal"><span class="pre">tail</span></code> instead of
<code class="docutils literal"><span class="pre">tip</span></code>. This was done in order to match the default behavior of
the 2D quiver function.</li>
</ol>
<p>To obtain the previous behavior with the 3D quiver function, one can
call the function with</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">ax</span><span class="o">.</span><span class="n">quiver</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">,</span> <span class="n">z</span><span class="p">,</span> <span class="n">u</span><span class="p">,</span> <span class="n">v</span><span class="p">,</span> <span class="n">w</span><span class="p">,</span> <span class="n">normalize</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">pivot</span><span class="o">=</span><span class="s1">'tip'</span><span class="p">)</span>
</pre></div>
</div>
<p>where “ax” is an <code class="docutils literal"><span class="pre">Axes3d</span></code> object created with something like</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">mpl_toolkits.mplot3d.axes3d</span>
<span class="n">ax</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">sublot</span><span class="p">(</span><span class="mi">111</span><span class="p">,</span> <span class="n">projection</span><span class="o">=</span><span class="s1">'3d'</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="stale-figure-behavior">
<h3>Stale figure behavior<a class="headerlink" href="#stale-figure-behavior" title="Permalink to this headline">¶</a></h3>
<p>Attempting to draw the figure will now mark it as not stale (independent if
the draw succeeds). This change is to prevent repeatedly trying to re-draw a
figure which is raising an error on draw. The previous behavior would only mark
a figure as not stale after a full re-draw succeeded.</p>
</div>
<div class="section" id="the-spectral-colormap-is-now-nipy-spectral">
<h3>The spectral colormap is now nipy_spectral<a class="headerlink" href="#the-spectral-colormap-is-now-nipy-spectral" title="Permalink to this headline">¶</a></h3>
<p>The colormaps formerly known as <code class="docutils literal"><span class="pre">spectral</span></code> and <code class="docutils literal"><span class="pre">spectral_r</span></code> have been
replaced by <code class="docutils literal"><span class="pre">nipy_spectral</span></code> and <code class="docutils literal"><span class="pre">nipy_spectral_r</span></code> since Matplotlib
1.3.0. Even though the colormap was deprecated in Matplotlib 1.3.0, it never
raised a warning. As of Matplotlib 2.0.0, using the old names raises a
deprecation warning. In the future, using the old names will raise an error.</p>
</div>
<div class="section" id="default-install-no-longer-includes-test-images">
<h3>Default install no longer includes test images<a class="headerlink" href="#default-install-no-longer-includes-test-images" title="Permalink to this headline">¶</a></h3>
<p>To reduce the size of wheels and source installs, the tests and
baseline images are no longer included by default.</p>
<p>To restore installing the tests and images, use a <code class="xref py py-obj docutils literal"><span class="pre">setup.cfg</span></code> with</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="p">[</span><span class="n">packages</span><span class="p">]</span>
<span class="n">tests</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">toolkits_tests</span> <span class="o">=</span> <span class="kc">True</span>
</pre></div>
</div>
<p>in the source directory at build/install time.</p>
</div>
</div>
<div class="section" id="changes-in-1-5-3">
<h2>Changes in 1.5.3<a class="headerlink" href="#changes-in-1-5-3" title="Permalink to this headline">¶</a></h2>
<div class="section" id="ax-plot-marker-none-gives-default-marker">
<h3><code class="docutils literal"><span class="pre">ax.plot(...,</span> <span class="pre">marker=None)</span></code> gives default marker<a class="headerlink" href="#ax-plot-marker-none-gives-default-marker" title="Permalink to this headline">¶</a></h3>
<p>Prior to 1.5.3 kwargs passed to <code class="xref py py-obj docutils literal"><span class="pre">plot</span></code> were handled
in two parts – default kwargs generated internal to
<code class="xref py py-obj docutils literal"><span class="pre">plot</span></code> (such as the cycled styles) and user supplied
kwargs. The internally generated kwargs were passed to the
<code class="xref py py-obj docutils literal"><span class="pre">matplotlib.lines.Line2D.__init__</span></code> and the user kwargs were passed to
<code class="docutils literal"><span class="pre">ln.set(**kwargs)</span></code> to update the artist after it was created. Now
both sets of kwargs are merged and passed to
<code class="xref py py-obj docutils literal"><span class="pre">__init__</span></code>. This change was made to allow <a class="reference external" href="https://docs.python.org/3/library/constants.html#None" title="(in Python v3.6)"><code class="xref py py-obj docutils literal"><span class="pre">None</span></code></a>
to be passed in via the user kwargs to mean ‘do the default thing’ as
is the convention through out mpl rather than raising an exception.</p>
<p>Unlike most <a class="reference internal" href="_as_gen/matplotlib.lines.Line2D.html#matplotlib.lines.Line2D" title="matplotlib.lines.Line2D"><code class="xref py py-obj docutils literal"><span class="pre">Line2D</span></code></a> setter methods
<a class="reference internal" href="_as_gen/matplotlib.lines.Line2D.html#matplotlib.lines.Line2D.set_marker" title="matplotlib.lines.Line2D.set_marker"><code class="xref py py-obj docutils literal"><span class="pre">set_marker</span></code></a> did accept <a class="reference external" href="https://docs.python.org/3/library/constants.html#None" title="(in Python v3.6)"><code class="xref py py-obj docutils literal"><span class="pre">None</span></code></a> as a valid
input which was mapped to ‘no marker’. Thus, by routing this
<code class="docutils literal"><span class="pre">marker=None</span></code> through <code class="docutils literal"><span class="pre">__init__</span></code> rather than <code class="docutils literal"><span class="pre">set(...)</span></code> the meaning
of <code class="docutils literal"><span class="pre">ax.plot(...,</span> <span class="pre">marker=None)</span></code> changed from ‘no markers’ to ‘default markers
from rcparams’.</p>
<p>This is change is only evident if <code class="docutils literal"><span class="pre">mpl.rcParams['lines.marker']</span></code> has a value
other than <code class="docutils literal"><span class="pre">'None'</span></code> (which is string <code class="docutils literal"><span class="pre">'None'</span></code> which means ‘no marker’).</p>
</div>
</div>
<div class="section" id="changes-in-1-5-2">
<h2>Changes in 1.5.2<a class="headerlink" href="#changes-in-1-5-2" title="Permalink to this headline">¶</a></h2>