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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>matplotlib.axis — Matplotlib 3.2.1 documentation</title>

title="Search within Matplotlib 3.2.1 documentation"

href="../../_static/opensearch.xml"/>

</head><body>

<div id="unreleased-message"> You are reading an old version of the documentation (v3.2.1). For the latest version see <a href="/stable/">https://matplotlib.org/stable/</a> </div>

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</a>

Entries are due June 1, 2020.

</div>

<div style="float: left; position: absolute; width: 496px; bottom: 0; padding-bottom: 24px">Version 3.2.1</div>

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<h1>Source code for matplotlib.axis</h1><div class="highlight"><pre>

"""

Classes for the ticks and x and y axis.

"""

import datetime

import logging

import numpy as np

from matplotlib import rcParams

import matplotlib.artist as martist

import matplotlib.cbook as cbook

import matplotlib.font_manager as font_manager

import matplotlib.lines as mlines

import matplotlib.scale as mscale

import matplotlib.text as mtext

import matplotlib.ticker as mticker

import matplotlib.transforms as mtransforms

import matplotlib.units as munits

_log = logging.getLogger(__name__)

GRIDLINE_INTERPOLATION_STEPS = 180

# This list is being used for compatibility with Axes.grid, which

# allows all Line2D kwargs.

_line_AI = martist.ArtistInspector(mlines.Line2D)

_line_param_names = _line_AI.get_setters()

_line_param_aliases = [list(d)[0] for d in _line_AI.aliasd.values()]

_gridline_param_names = ['grid_' + name

for name in _line_param_names + _line_param_aliases]

<div class="viewcode-block" id="Tick"><a class="viewcode-back" href="../../api/axis_api.html#matplotlib.axis.Tick">[docs]</a>class Tick(martist.Artist):

"""

Abstract base class for the axis ticks, grid lines and labels.

Ticks mark a position on an Axis. They contain two lines as markers and

two labels; one each for the bottom and top positions (in case of an

`.XAxis`) or for the left and right positions (in case of a `.YAxis`).

Attributes

----------

tick1line : `.Line2D`

The left/bottom tick marker.

tick2line : `.Line2D`

The right/top tick marker.

gridline : `.Line2D`

The grid line associated with the label position.

label1 : `.Text`

The left/bottom tick label.

label2 : `.Text`

The right/top tick label.

"""

def __init__(self, axes, loc, label,

size=None, # points

width=None,

color=None,

tickdir=None,

pad=None,

labelsize=None,

labelcolor=None,

zorder=None,

gridOn=None, # defaults to axes.grid depending on

# axes.grid.which

tick1On=True,

tick2On=True,

label1On=True,

label2On=False,

major=True,

labelrotation=0,

grid_color=None,

grid_linestyle=None,

grid_linewidth=None,

grid_alpha=None,

**kw # Other Line2D kwargs applied to gridlines.

):

"""

bbox is the Bound2D bounding box in display coords of the Axes

loc is the tick location in data coords

size is the tick size in points

"""

martist.Artist.__init__(self)

if gridOn is None:

if major and (rcParams['axes.grid.which'] in ('both', 'major')):

gridOn = rcParams['axes.grid']

elif (not major) and (rcParams['axes.grid.which']

in ('both', 'minor')):

gridOn = rcParams['axes.grid']

else:

gridOn = False

self.set_figure(axes.figure)

self.axes = axes

name = self.__name__.lower()

self._loc = loc

if size is None:

if major:

size = rcParams['%s.major.size' % name]

else:

size = rcParams['%s.minor.size' % name]

self._size = size

if width is None:

if major:

width = rcParams['%s.major.width' % name]

else:

width = rcParams['%s.minor.width' % name]

self._width = width

if color is None:

color = rcParams['%s.color' % name]

self._color = color

if pad is None:

if major:

pad = rcParams['%s.major.pad' % name]

else:

pad = rcParams['%s.minor.pad' % name]

self._base_pad = pad

if labelcolor is None:

labelcolor = rcParams['%s.color' % name]

self._labelcolor = labelcolor

if labelsize is None:

labelsize = rcParams['%s.labelsize' % name]

self._labelsize = labelsize

self._set_labelrotation(labelrotation)

if zorder is None:

if major:

zorder = mlines.Line2D.zorder + 0.01

else:

zorder = mlines.Line2D.zorder

self._zorder = zorder

self._grid_color = (rcParams['grid.color']

if grid_color is None else grid_color)

self._grid_linestyle = (rcParams['grid.linestyle']

if grid_linestyle is None else grid_linestyle)

self._grid_linewidth = (rcParams['grid.linewidth']

if grid_linewidth is None else grid_linewidth)

self._grid_alpha = (rcParams['grid.alpha']

if grid_alpha is None else grid_alpha)

self._grid_kw = {k[5:]: v for k, v in kw.items()}

self.apply_tickdir(tickdir)

self.tick1line = self._get_tick1line()

self.tick2line = self._get_tick2line()

self.gridline = self._get_gridline()

self.label1 = self._get_text1()

self.label2 = self._get_text2()

self.gridline.set_visible(gridOn)

self.tick1line.set_visible(tick1On)

self.tick2line.set_visible(tick2On)

self.label1.set_visible(label1On)

self.label2.set_visible(label2On)

self.update_position(loc)

for _old_name, _new_name in [

("gridOn", "gridline"),

("tick1On", "tick1line"),

("tick2On", "tick2line"),

("label1On", "label1"),

("label2On", "label2")]:

locals()[_old_name] = property(

cbook.deprecated(

"3.1",

name=_old_name,

alternative="Tick.{}.get_visible".format(_new_name))(

lambda self, _new_name=_new_name:

getattr(self, _new_name).get_visible()),

cbook.deprecated(

"3.1",

name=_old_name,

alternative="Tick.{}.set_visible".format(_new_name))(

lambda self, value, _new_name=_new_name:

del _old_name, _new_name

@property

@cbook.deprecated("3.1", alternative="Tick.label1", pending=True)

def label(self):

return self.label1

def _set_labelrotation(self, labelrotation):

if isinstance(labelrotation, str):

mode = labelrotation

angle = 0

elif isinstance(labelrotation, (tuple, list)):

mode, angle = labelrotation

else:

mode = 'default'

angle = labelrotation

cbook._check_in_list(['auto', 'default'], labelrotation=mode)

self._labelrotation = (mode, angle)

def apply_tickdir(self, tickdir):

"""Calculate self._pad and self._tickmarkers."""

def get_tickdir(self):

return self._tickdir

def get_tick_padding(self):

"""Get the length of the tick outside of the axes."""

padding = {

'in': 0.0,

'inout': 0.5,

'out': 1.0

}

return self._size * padding[self._tickdir]

def get_children(self):

children = [self.tick1line, self.tick2line,

self.gridline, self.label1, self.label2]

return children

def set_clip_path(self, clippath, transform=None):

# docstring inherited

martist.Artist.set_clip_path(self, clippath, transform)

self.gridline.set_clip_path(clippath, transform)

self.stale = True

def get_pad_pixels(self):

return self.figure.dpi * self._base_pad / 72

def contains(self, mouseevent):

"""

Test whether the mouse event occurred in the Tick marks.

This function always returns false. It is more useful to test if the

axis as a whole contains the mouse rather than the set of tick marks.

"""

inside, info = self._default_contains(mouseevent)

if inside is not None:

return inside, info

return False, {}

def set_pad(self, val):

"""

Set the tick label pad in points

Parameters

----------

val : float

"""

self._apply_params(pad=val)

self.stale = True

def get_pad(self):

'Get the value of the tick label pad in points'

return self._base_pad

def _get_text1(self):

'Get the default Text 1 instance'

pass

def _get_text2(self):

'Get the default Text 2 instance'

pass

def _get_tick1line(self):

'Get the default line2D instance for tick1'

pass

def _get_tick2line(self):

'Get the default line2D instance for tick2'

pass

def _get_gridline(self):

'Get the default grid Line2d instance for this tick'

pass

def get_loc(self):

'Return the tick location (data coords) as a scalar'

return self._loc

@martist.allow_rasterization

def draw(self, renderer):

if not self.get_visible():

self.stale = False

return

renderer.open_group(self.__name__, gid=self.get_gid())

for artist in [self.gridline, self.tick1line, self.tick2line,

self.label1, self.label2]:

artist.draw(renderer)

renderer.close_group(self.__name__)

self.stale = False

def set_label1(self, s):

"""

Set the label1 text.

Parameters

----------

s : str

"""

self.label1.set_text(s)

self.stale = True

set_label = set_label1

def set_label2(self, s):

"""

Set the label2 text.

Parameters

----------

s : str

"""

self.label2.set_text(s)

self.stale = True

def _set_artist_props(self, a):

a.set_figure(self.figure)

def get_view_interval(self):

"""

Return the view limits ``(min, max)`` of the axis the tick belongs to.

"""

raise NotImplementedError('Derived must override')

def _apply_params(self, **kw):

for name, target in [("gridOn", self.gridline),

("tick1On", self.tick1line),

("tick2On", self.tick2line),

("label1On", self.label1),

("label2On", self.label2)]:

if name in kw:

target.set_visible(kw.pop(name))

if any(k in kw for k in ['size', 'width', 'pad', 'tickdir']):

self._size = kw.pop('size', self._size)

# Width could be handled outside this block, but it is

# convenient to leave it here.

self._width = kw.pop('width', self._width)

self._base_pad = kw.pop('pad', self._base_pad)

# apply_tickdir uses _size and _base_pad to make _pad,

# and also makes _tickmarkers.

self.apply_tickdir(kw.pop('tickdir', self._tickdir))

self.tick1line.set_marker(self._tickmarkers[0])

self.tick2line.set_marker(self._tickmarkers[1])

for line in (self.tick1line, self.tick2line):

line.set_markersize(self._size)

line.set_markeredgewidth(self._width)

# _get_text1_transform uses _pad from apply_tickdir.

trans = self._get_text1_transform()[0]

self.label1.set_transform(trans)

trans = self._get_text2_transform()[0]

self.label2.set_transform(trans)

tick_kw = {k: v for k, v in kw.items() if k in ['color', 'zorder']}

self.tick1line.set(**tick_kw)

self.tick2line.set(**tick_kw)

for k, v in tick_kw.items():

setattr(self, '_' + k, v)

if 'labelrotation' in kw:

self._set_labelrotation(kw.pop('labelrotation'))

self.label1.set(rotation=self._labelrotation[1])

self.label2.set(rotation=self._labelrotation[1])

label_kw = {k[5:]: v for k, v in kw.items()

if k in ['labelsize', 'labelcolor']}

for k, v in label_kw.items():

# for labelsize the text objects covert str ('small')

# -> points. grab the integer from the `Text` object

# instead of saving the string representation

v = getattr(self.label1, 'get_' + k)()

setattr(self, '_label' + k, v)

grid_kw = {k[5:]: v for k, v in kw.items()

if k in _gridline_param_names}

self.gridline.set(**grid_kw)

for k, v in grid_kw.items():

setattr(self, '_grid_' + k, v)

def update_position(self, loc):

'Set the location of tick in data coords with scalar *loc*'

raise NotImplementedError('Derived must override')

def _get_text1_transform(self):

raise NotImplementedError('Derived must override')

def _get_text2_transform(self):

raise NotImplementedError('Derived must override')</div>

<div class="viewcode-block" id="XTick"><a class="viewcode-back" href="../../api/axis_api.html#matplotlib.axis.XTick">[docs]</a>class XTick(Tick):

"""

Contains all the Artists needed to make an x tick - the tick line,

the label text and the grid line

"""

__name__ = 'xtick'

def _get_text1_transform(self):

return self.axes.get_xaxis_text1_transform(self._pad)

def _get_text2_transform(self):

return self.axes.get_xaxis_text2_transform(self._pad)

def apply_tickdir(self, tickdir):

if tickdir is None:

tickdir = rcParams['%s.direction' % self.__name__.lower()]

self._tickdir = tickdir

if self._tickdir == 'in':

self._tickmarkers = (mlines.TICKUP, mlines.TICKDOWN)

elif self._tickdir == 'inout':

self._tickmarkers = ('|', '|')

else:

self._tickmarkers = (mlines.TICKDOWN, mlines.TICKUP)

self._pad = self._base_pad + self.get_tick_padding()

self.stale = True

def _get_text1(self):

'Get the default Text instance'

# the y loc is 3 points below the min of y axis

# get the affine as an a, b, c, d, tx, ty list

# x in data coords, y in axes coords

trans, vert, horiz = self._get_text1_transform()

t = mtext.Text(

x=0, y=0,

fontproperties=font_manager.FontProperties(size=self._labelsize),

color=self._labelcolor,

verticalalignment=vert,

horizontalalignment=horiz,

)

t.set_transform(trans)

self._set_artist_props(t)

return t

def _get_text2(self):

'Get the default Text 2 instance'

# x in data coords, y in axes coords

t = mtext.Text(

x=0, y=1,

color=self._labelcolor,

verticalalignment=vert,

horizontalalignment=horiz,

)

t.set_transform(trans)

self._set_artist_props(t)

return t

def _get_tick1line(self):

'Get the default line2D instance'

# x in data coords, y in axes coords

l = mlines.Line2D(xdata=(0,), ydata=(0,), color=self._color,

linestyle='None', marker=self._tickmarkers[0],

markersize=self._size,

markeredgewidth=self._width, zorder=self._zorder)

l.set_transform(self.axes.get_xaxis_transform(which='tick1'))

self._set_artist_props(l)

return l

def _get_tick2line(self):

'Get the default line2D instance'

# x in data coords, y in axes coords

color=self._color,

linestyle='None',

marker=self._tickmarkers[1],

markersize=self._size,

markeredgewidth=self._width,

zorder=self._zorder)

self._set_artist_props(l)

return l

def _get_gridline(self):

'Get the default line2D instance'

# x in data coords, y in axes coords

l = mlines.Line2D(xdata=(0.0, 0.0), ydata=(0, 1.0),

color=self._grid_color,

linestyle=self._grid_linestyle,

linewidth=self._grid_linewidth,

alpha=self._grid_alpha,

markersize=0,

**self._grid_kw)

l.get_path()._interpolation_steps = GRIDLINE_INTERPOLATION_STEPS

self._set_artist_props(l)

return l

def update_position(self, loc):

"""Set the location of tick in data coords with scalar *loc*."""

self.tick1line.set_xdata((loc,))

self.tick2line.set_xdata((loc,))

self.gridline.set_xdata((loc,))

self.label1.set_x(loc)

self.label2.set_x(loc)

self._loc = loc

self.stale = True

def get_view_interval(self):

# docstring inherited

return self.axes.viewLim.intervalx</div>

<div class="viewcode-block" id="YTick"><a class="viewcode-back" href="../../api/axis_api.html#matplotlib.axis.YTick">[docs]</a>class YTick(Tick):

"""

Contains all the Artists needed to make a Y tick - the tick line,

the label text and the grid line

"""

__name__ = 'ytick'

def _get_text1_transform(self):

return self.axes.get_yaxis_text1_transform(self._pad)

def _get_text2_transform(self):

return self.axes.get_yaxis_text2_transform(self._pad)

def apply_tickdir(self, tickdir):

if tickdir is None:

self._tickdir = tickdir

if self._tickdir == 'in':

self._tickmarkers = (mlines.TICKRIGHT, mlines.TICKLEFT)

elif self._tickdir == 'inout':

self._tickmarkers = ('_', '_')

else:

self._tickmarkers = (mlines.TICKLEFT, mlines.TICKRIGHT)

self.stale = True

# how far from the y axis line the right of the ticklabel are

def _get_text1(self):

'Get the default Text instance'

# x in axes coords, y in data coords

t = mtext.Text(

x=0, y=0,

color=self._labelcolor,

verticalalignment=vert,

horizontalalignment=horiz,

)

t.set_transform(trans)

self._set_artist_props(t)

return t

def _get_text2(self):

'Get the default Text instance'

# x in axes coords, y in data coords

t = mtext.Text(

x=1, y=0,

color=self._labelcolor,

verticalalignment=vert,

horizontalalignment=horiz,

)

t.set_transform(trans)

self._set_artist_props(t)

return t

def _get_tick1line(self):

'Get the default line2D instance'

# x in axes coords, y in data coords

l = mlines.Line2D((0,), (0,),

color=self._color,

linestyle='None',

markersize=self._size,

markeredgewidth=self._width,

zorder=self._zorder)

l.set_transform(self.axes.get_yaxis_transform(which='tick1'))

self._set_artist_props(l)

return l

def _get_tick2line(self):

'Get the default line2D instance'

# x in axes coords, y in data coords

l = mlines.Line2D((1,), (0,),

color=self._color,

linestyle='None',

markersize=self._size,

markeredgewidth=self._width,

zorder=self._zorder)

l.set_transform(self.axes.get_yaxis_transform(which='tick2'))

self._set_artist_props(l)

return l

def _get_gridline(self):

'Get the default line2D instance'

# x in axes coords, y in data coords

l = mlines.Line2D(xdata=(0, 1), ydata=(0, 0),

color=self._grid_color,

linestyle=self._grid_linestyle,

linewidth=self._grid_linewidth,

alpha=self._grid_alpha,

markersize=0,

**self._grid_kw)

l.set_transform(self.axes.get_yaxis_transform(which='grid'))

self._set_artist_props(l)

return l

def update_position(self, loc):

"""Set the location of tick in data coords with scalar *loc*."""

self.tick1line.set_ydata((loc,))

self.tick2line.set_ydata((loc,))

self.gridline.set_ydata((loc,))

self.label1.set_y(loc)

self.label2.set_y(loc)

self._loc = loc

self.stale = True

def get_view_interval(self):

# docstring inherited

<div class="viewcode-block" id="Ticker"><a class="viewcode-back" href="../../api/axis_api.html#matplotlib.axis.Ticker">[docs]</a>class Ticker:

"""

A container for the objects defining tick position and format.

Attributes

----------

locator : `matplotlib.ticker.Locator` subclass

Determines the positions of the ticks.

formatter : `matplotlib.ticker.Formatter` subclass

Determines the format of the tick labels.

"""

def __init__(self):

self._locator = None

self._formatter = None

@property

def locator(self):

return self._locator

@locator.setter

def locator(self, locator):

if not isinstance(locator, mticker.Locator):

cbook.warn_deprecated(

"3.2", message="Support for locators that do not subclass "

"matplotlib.ticker.Locator is deprecated since %(since)s and "

"support for them will be removed %(removal)s.")

self._locator = locator

@property

def formatter(self):

return self._formatter

@formatter.setter

def formatter(self, formatter):

if not isinstance(formatter, mticker.Formatter):

cbook.warn_deprecated(

"3.2", message="Support for formatters that do not subclass "

"matplotlib.ticker.Formatter is deprecated since %(since)s "

"and support for them will be removed %(removal)s.")

self._formatter = formatter</div>

class _LazyTickList:

"""

A descriptor for lazy instantiation of tick lists.

See comment above definition of the ``majorTicks`` and ``minorTicks``

attributes.

"""

def __init__(self, major):

self._major = major

def __get__(self, instance, cls):

if instance is None:

return self

else:

# instance._get_tick() can itself try to access the majorTicks

# attribute (e.g. in certain projection classes which override

# e.g. get_xaxis_text1_transform). In order to avoid infinite

# recursion, first set the majorTicks on the instance to an empty

# list, then create the tick and append it.

if self._major:

instance.majorTicks = []

tick = instance._get_tick(major=True)

instance.majorTicks.append(tick)

return instance.majorTicks

else:

instance.minorTicks = []

instance.minorTicks.append(tick)

return instance.minorTicks

<div class="viewcode-block" id="Axis"><a class="viewcode-back" href="../../api/axis_api.html#matplotlib.axis.Axis">[docs]</a>class Axis(martist.Artist):

"""

Base class for `.XAxis` and `.YAxis`.

Attributes

----------

isDefault_label : bool

axes : `matplotlib.axes.Axes`

The `~.axes.Axes` to which the Axis belongs.

major : `matplotlib.axis.Ticker`

Determines the major tick positions and their label format.

minor : `matplotlib.axis.Ticker`

Determines the minor tick positions and their label format.

callbacks : `matplotlib.cbook.CallbackRegistry`

label : `.Text`

The axis label.

labelpad : float

The distance between the axis label and the tick labels.

Defaults to :rc:`axes.labelpad` = 4.

offsetText : `.Text`

A `.Text` object containing the data offset of the ticks (if any).

pickradius : float

The acceptance radius for containment tests. See also `.Axis.contains`.

majorTicks : list of `.Tick`

The major ticks.

minorTicks : list of `.Tick`

The minor ticks.

"""

OFFSETTEXTPAD = 3

def __str__(self):

return "{}({},{})".format(

type(self).__name__, *self.axes.transAxes.transform((0, 0)))

def __init__(self, axes, pickradius=15):

"""

Parameters

----------

axes : `matplotlib.axes.Axes`

The `~.axes.Axes` to which the created Axis belongs.

pickradius : float

The acceptance radius for containment tests. See also

`.Axis.contains`.

"""

self._remove_overlapping_locs = True

self.isDefault_label = True

self.axes = axes

self.major = Ticker()

self.minor = Ticker()

self.callbacks = cbook.CallbackRegistry()

self._autolabelpos = True

self._smart_bounds = False # Deprecated in 3.2

self.label = self._get_label()

self.labelpad = rcParams['axes.labelpad']

self.offsetText = self._get_offset_text()

self.pickradius = pickradius

# Initialize here for testing; later add API

self._major_tick_kw = dict()

self._minor_tick_kw = dict()

self.cla()

self._set_scale('linear')

# During initialization, Axis objects often create ticks that are later

# unused; this turns out to be a very slow step. Instead, use a custom

# descriptor to make the tick lists lazy and instantiate them as needed.

majorTicks = _LazyTickList(major=True)

minorTicks = _LazyTickList(major=False)

<div class="viewcode-block" id="Axis.get_remove_overlapping_locs"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.axis.Axis.get_remove_overlapping_locs.html#matplotlib.axis.Axis.get_remove_overlapping_locs">[docs]</a> def get_remove_overlapping_locs(self):

return self._remove_overlapping_locs</div>

def set_remove_overlapping_locs(self, val):

self._remove_overlapping_locs = bool(val)

remove_overlapping_locs = property(

get_remove_overlapping_locs, set_remove_overlapping_locs,

doc=('If minor ticker locations that overlap with major '

'ticker locations should be trimmed.'))

def set_label_coords(self, x, y, transform=None):

"""

Set the coordinates of the label.

By default, the x coordinate of the y label and the y coordinate of the

x label are determined by the tick label bounding boxes, but this can

lead to poor alignment of multiple labels if there are multiple axes.

You can also specify the coordinate system of the label with the

transform. If None, the default coordinate system will be the axes

coordinate system: (0, 0) is bottom left, (0.5, 0.5) is center, etc.

"""

self._autolabelpos = False

if transform is None:

transform = self.axes.transAxes

self.label.set_transform(transform)

self.label.set_position((x, y))

self.stale = True

def get_transform(self):

return self._scale.get_transform()

<div class="viewcode-block" id="Axis.get_scale"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.axis.Axis.get_scale.html#matplotlib.axis.Axis.get_scale">[docs]</a> def get_scale(self):

return self._scale.name</div>

def _set_scale(self, value, **kwargs):

self._scale = mscale.scale_factory(value, self, **kwargs)

self._scale.set_default_locators_and_formatters(self)

self.isDefault_majloc = True

self.isDefault_minloc = True

self.isDefault_majfmt = True

self.isDefault_minfmt = True

def limit_range_for_scale(self, vmin, vmax):

return self._scale.limit_range_for_scale(vmin, vmax, self.get_minpos())

<div class="viewcode-block" id="Axis.get_children"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.axis.Axis.get_children.html#matplotlib.axis.Axis.get_children">[docs]</a> def get_children(self):

return [self.label, self.offsetText,

*self.get_major_ticks(), *self.get_minor_ticks()]</div>

<div class="viewcode-block" id="Axis.cla"><a class="viewcode-back" href="../../api/_as_gen/matplotlib.axis.Axis.cla.html#matplotlib.axis.Axis.cla">[docs]</a> def cla(self):

"""Clear this axis."""

self.label.set_text('') # self.set_label_text would change isDefault_

self._set_scale('linear')

# Clear the callback registry for this axis, or it may "leak"

# whether the grids are on

self._gridOnMajor = (rcParams['axes.grid'] and

rcParams['axes.grid.which'] in ('both', 'major'))

self._gridOnMinor = (rcParams['axes.grid'] and

self.reset_ticks()

self.converter = None

self.units = None

self.set_units(None)

self.stale = True</div>

def reset_ticks(self):

"""

Re-initialize the major and minor Tick lists.

Each list starts with a single fresh Tick.

"""

# Restore the lazy tick lists.

try:

del self.majorTicks

except AttributeError:

pass

try:

del self.minorTicks

except AttributeError:

pass

try:

self.set_clip_path(self.axes.patch)

except AttributeError:

pass

def set_tick_params(self, which='major', reset=False, **kw):

"""

Set appearance parameters for ticks, ticklabels, and gridlines.

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