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<li><a class="reference internal" href="#">Publication-quality plots</a><ul>
<li><a class="reference internal" href="#setting-the-figure-size-explicitly">Setting the figure size explicitly</a></li>
<li><a class="reference internal" href="#choosing-the-right-font-family">Choosing the right font family</a></li>
<li><a class="reference internal" href="#font-sizes">Font sizes</a></li>
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<div class="section" id="publication-quality-plots">
<span id="id1"></span><h1>Publication-quality plots<a class="headerlink" href="#publication-quality-plots" title="Permalink to this headline">¶</a></h1>
<p>Here is some advice on how to make your plots ‘publication-quality’! The bottom line is that the defaults are often <em>not</em> what you want in a publication-quality plot. Design your plot leaving nothing to chance!</p>
<div class="section" id="setting-the-figure-size-explicitly">
<h2>Setting the figure size explicitly<a class="headerlink" href="#setting-the-figure-size-explicitly" title="Permalink to this headline">¶</a></h2>
<p>Explicitly set the figure size to the desired final figure size. This ensures
that the fonts for the labels will be the right size compared to the content
of the figure, and also ensures that if the defaults change, your plot will
not. Setting the figure size explicitly also makes it easier to make the axes
have the right aspect ratio if you use <tt class="docutils literal"><span class="pre">add_axes</span></tt>. If you make a plot too
large or too small to start with, the default font sizes will not look good:</p>
<a class="reference internal image-reference" href="../_images/publication_1.png"><img alt="../_images/publication_1.png" class="align-center" src="../_images/publication_1.png" style="width: 576.0px; height: 432.0px;" /></a>
<a class="reference internal image-reference" href="../_images/publication_2.png"><img alt="../_images/publication_2.png" class="align-center" src="../_images/publication_2.png" style="width: 474.0px; height: 404.0px;" /></a>
<p>The following plot has the right size for single-column plots:</p>
<a class="reference internal image-reference" href="../_images/publication_3.png"><img alt="../_images/publication_3.png" class="align-center" src="../_images/publication_3.png" style="width: 397.0px; height: 306.0px;" /></a>
<p>and the following has the right size for full-column plots:</p>
<a class="reference internal image-reference" href="../_images/publication_4.png"><img alt="../_images/publication_4.png" class="align-center" src="../_images/publication_4.png" style="width: 707.0px; height: 546.0px;" /></a>
<p><strong>Note</strong>: the default figure size is not the right size for either
single-column plots, so you will definitely want to change it for this.</p>
</div>
<div class="section" id="choosing-the-right-font-family">
<h2>Choosing the right font family<a class="headerlink" href="#choosing-the-right-font-family" title="Permalink to this headline">¶</a></h2>
<p>Choose the font family (‘serif’ or ‘sans-serif’ to match the paper - most of
the time, ‘serif’ is best):</p>
<div class="highlight-python"><div class="highlight"><pre><span class="n">plt</span><span class="o">.</span><span class="n">rc</span><span class="p">(</span><span class="s">'font'</span><span class="p">,</span> <span class="n">family</span><span class="o">=</span><span class="s">'serif'</span><span class="p">)</span>
<span class="n">fig</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">figure</span><span class="p">(</span><span class="n">figsize</span><span class="o">=</span><span class="p">(</span><span class="mi">4</span><span class="p">,</span> <span class="mi">3</span><span class="p">))</span>
<span class="n">ax</span> <span class="o">=</span> <span class="n">fig</span><span class="o">.</span><span class="n">add_subplot</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">plt</span><span class="o">.</span><span class="n">plot</span><span class="p">([</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">])</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class="s">'The x values'</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_ylabel</span><span class="p">(</span><span class="s">'The y values'</span><span class="p">)</span>
</pre></div>
</div>
<a class="reference internal image-reference" href="../_images/publication_serif.png"><img alt="../_images/publication_serif.png" class="align-center" src="../_images/publication_serif.png" style="width: 396.0px; height: 305.0px;" /></a>
</div>
<div class="section" id="font-sizes">
<h2>Font sizes<a class="headerlink" href="#font-sizes" title="Permalink to this headline">¶</a></h2>
<p>Differentiate the font size/style between the axis labels and the tick labels
(by default these are the same, and are set to <tt class="docutils literal"><span class="pre">medium</span></tt>). The tick label
size can often be reduced compared to the default:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="n">plt</span><span class="o">.</span><span class="n">rc</span><span class="p">(</span><span class="s">'font'</span><span class="p">,</span> <span class="n">family</span><span class="o">=</span><span class="s">'serif'</span><span class="p">)</span>
<span class="n">plt</span><span class="o">.</span><span class="n">rc</span><span class="p">(</span><span class="s">'xtick'</span><span class="p">,</span> <span class="n">labelsize</span><span class="o">=</span><span class="s">'x-small'</span><span class="p">)</span>
<span class="n">plt</span><span class="o">.</span><span class="n">rc</span><span class="p">(</span><span class="s">'ytick'</span><span class="p">,</span> <span class="n">labelsize</span><span class="o">=</span><span class="s">'x-small'</span><span class="p">)</span>
<span class="n">fig</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">figure</span><span class="p">(</span><span class="n">figsize</span><span class="o">=</span><span class="p">(</span><span class="mi">4</span><span class="p">,</span> <span class="mi">3</span><span class="p">))</span>
<span class="n">ax</span> <span class="o">=</span> <span class="n">fig</span><span class="o">.</span><span class="n">add_subplot</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">plt</span><span class="o">.</span><span class="n">plot</span><span class="p">([</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">])</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class="s">'The x values'</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_ylabel</span><span class="p">(</span><span class="s">'The y values'</span><span class="p">)</span>
</pre></div>
</div>
<a class="reference internal image-reference" href="../_images/publication_fontsize.png"><img alt="../_images/publication_fontsize.png" class="align-center" src="../_images/publication_fontsize.png" style="width: 385.0px; height: 300.0px;" /></a>
</div>
<div class="section" id="colored-lines">
<h2>Colored lines<a class="headerlink" href="#colored-lines" title="Permalink to this headline">¶</a></h2>
<p>Matplotlib uses color for lines by default. However, you should try and use just black/gray curves with line styles unless you <em>really</em> need color (don’t use a blue line if you have a single curve!):</p>
<div class="highlight-python"><div class="highlight"><pre><span class="n">plt</span><span class="o">.</span><span class="n">rc</span><span class="p">(</span><span class="s">'font'</span><span class="p">,</span> <span class="n">family</span><span class="o">=</span><span class="s">'serif'</span><span class="p">)</span>
<span class="n">plt</span><span class="o">.</span><span class="n">rc</span><span class="p">(</span><span class="s">'xtick'</span><span class="p">,</span> <span class="n">labelsize</span><span class="o">=</span><span class="s">'x-small'</span><span class="p">)</span>
<span class="n">plt</span><span class="o">.</span><span class="n">rc</span><span class="p">(</span><span class="s">'ytick'</span><span class="p">,</span> <span class="n">labelsize</span><span class="o">=</span><span class="s">'x-small'</span><span class="p">)</span>
<span class="n">fig</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">figure</span><span class="p">(</span><span class="n">figsize</span><span class="o">=</span><span class="p">(</span><span class="mi">4</span><span class="p">,</span> <span class="mi">3</span><span class="p">))</span>
<span class="n">ax</span> <span class="o">=</span> <span class="n">fig</span><span class="o">.</span><span class="n">add_subplot</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</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">linspace</span><span class="p">(</span><span class="mf">1.</span><span class="p">,</span> <span class="mf">8.</span><span class="p">,</span> <span class="mi">30</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">x</span> <span class="o">**</span> <span class="mf">1.5</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s">'k'</span><span class="p">,</span> <span class="n">ls</span><span class="o">=</span><span class="s">'solid'</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="mi">20</span><span class="o">/</span><span class="n">x</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s">'0.50'</span><span class="p">,</span> <span class="n">ls</span><span class="o">=</span><span class="s">'dashed'</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class="s">'Time (s)'</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_ylabel</span><span class="p">(</span><span class="s">'Temperature (K)'</span><span class="p">)</span>
</pre></div>
</div>
<a class="reference internal image-reference" href="../_images/publication_lines.png"><img alt="../_images/publication_lines.png" class="align-center" src="../_images/publication_lines.png" style="width: 375.0px; height: 302.0px;" /></a>
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<div class="section" id="latex">
<h2>LaTeX<a class="headerlink" href="#latex" title="Permalink to this headline">¶</a></h2>
<p>If you don’t <em>need</em> LaTeX, don’t use it. It is slower to plot, and text looks just fine without. If you need it, e.g. for symbols, then use it.</p>
<p>One of the rc parameters available is <tt class="docutils literal"><span class="pre">text.usetex</span></tt>, which allows Matplotlib to use the system LaTeX installation instead of the built-in one. The system installation generally produces better results, but is quite slow (it may take several seconds to generate the labels for the plot). The parameter can be set in-script with:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="n">plt</span><span class="o">.</span><span class="n">rc</span><span class="p">(</span><span class="s">'text'</span><span class="p">,</span> <span class="n">usetex</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>
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<p>Because of the slower performance, we recommend only enabling this option at the last minute, once you are ready to make the final plot.</p>
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