Source code for matplotlib.axis

"""
Classes for the ticks and x and y axis.
"""

import datetime
import functools
import logging

import numpy as np

import matplotlib as mpl
from matplotlib import _api
import matplotlib.artist as martist
import matplotlib.cbook as cbook
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_inspector = martist.ArtistInspector(mlines.Line2D)
_line_param_names = _line_inspector.get_setters()
_line_param_aliases = [list(d)[0] for d in _line_inspector.aliasd.values()]
_gridline_param_names = ['grid_' + name
                         for name in _line_param_names + _line_param_aliases]


[docs]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. """ @cbook._delete_parameter("3.3", "label") def __init__(self, axes, loc, label=None, 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 """ super().__init__() if gridOn is None: if major and (mpl.rcParams['axes.grid.which'] in ('both', 'major')): gridOn = mpl.rcParams['axes.grid'] elif (not major) and (mpl.rcParams['axes.grid.which'] in ('both', 'minor')): gridOn = mpl.rcParams['axes.grid'] else: gridOn = False self.set_figure(axes.figure) self.axes = axes name = self.__name__.lower() self._loc = loc self._major = major major_minor = "major" if major else "minor" if size is None: size = mpl.rcParams[f"{name}.{major_minor}.size"] self._size = size if width is None: width = mpl.rcParams[f"{name}.{major_minor}.width"] self._width = width if color is None: color = mpl.rcParams[f"{name}.color"] if pad is None: pad = mpl.rcParams[f"{name}.{major_minor}.pad"] self._base_pad = pad if labelcolor is None: labelcolor = mpl.rcParams[f"{name}.labelcolor"] if labelcolor == 'inherit': # inherit from tick color labelcolor = mpl.rcParams[f"{name}.color"] if labelsize is None: labelsize = mpl.rcParams[f"{name}.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 if grid_color is None: grid_color = mpl.rcParams["grid.color"] if grid_linestyle is None: grid_linestyle = mpl.rcParams["grid.linestyle"] if grid_linewidth is None: grid_linewidth = mpl.rcParams["grid.linewidth"] if grid_alpha is None: grid_alpha = mpl.rcParams["grid.alpha"] grid_kw = {k[5:]: v for k, v in kw.items()} self.apply_tickdir(tickdir) self.tick1line = mlines.Line2D( [], [], color=color, linestyle="none", zorder=zorder, visible=tick1On, markeredgecolor=color, markersize=size, markeredgewidth=width, ) self.tick2line = mlines.Line2D( [], [], color=color, linestyle="none", zorder=zorder, visible=tick2On, markeredgecolor=color, markersize=size, markeredgewidth=width, ) self.gridline = mlines.Line2D( [], [], color=grid_color, alpha=grid_alpha, visible=gridOn, linestyle=grid_linestyle, linewidth=grid_linewidth, marker="", **grid_kw, ) self.gridline.get_path()._interpolation_steps = \ GRIDLINE_INTERPOLATION_STEPS self.label1 = mtext.Text( np.nan, np.nan, fontsize=labelsize, color=labelcolor, visible=label1On) self.label2 = mtext.Text( np.nan, np.nan, fontsize=labelsize, color=labelcolor, visible=label2On) for meth, attr in [("_get_tick1line", "tick1line"), ("_get_tick2line", "tick2line"), ("_get_gridline", "gridline"), ("_get_text1", "label1"), ("_get_text2", "label2")]: overridden_method = cbook._deprecate_method_override( getattr(__class__, meth), self, since="3.3", message="Relying " f"on {meth} to initialize Tick.{attr} is deprecated since " f"%(since)s and will not work %(removal)s; please directly " f"set the attribute in the subclass' __init__ instead.") if overridden_method: setattr(self, attr, overridden_method()) for artist in [self.tick1line, self.tick2line, self.gridline, self.label1, self.label2]: self._set_artist_props(artist) self.update_position(loc) @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 _api.check_in_list(['auto', 'default'], labelrotation=mode) self._labelrotation = (mode, angle)
[docs] def apply_tickdir(self, tickdir): """Calculate ``self._pad`` and ``self._tickmarkers``."""
[docs] def get_tickdir(self): return self._tickdir
[docs] 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 super().set_clip_path(clippath, transform) self.gridline.set_clip_path(clippath, transform) self.stale = True
[docs] 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, {}
[docs] def set_pad(self, val): """ Set the tick label pad in points Parameters ---------- val : float """ self._apply_params(pad=val) self.stale = True
[docs] 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.""" def _get_text2(self): """Get the default Text 2 instance.""" def _get_tick1line(self): """Get the default line2D instance for tick1.""" def _get_tick2line(self): """Get the default line2D instance for tick2.""" def _get_gridline(self): """Get the default grid Line2d instance for this tick."""
[docs] 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
[docs] def set_label1(self, s): """ Set the label1 text. Parameters ---------- s : str """ self.label1.set_text(s) self.stale = True
set_label = set_label1
[docs] def set_label2(self, s): """ Set the label2 text. Parameters ---------- s : str """ self.label2.set_text(s) self.stale = True
def set_url(self, url): """ Set the url of label1 and label2. Parameters ---------- url : str """ super().set_url(url) self.label1.set_url(url) self.label2.set_url(url) self.stale = True def _set_artist_props(self, a): a.set_figure(self.figure)
[docs] 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']} if 'color' in kw: tick_kw['markeredgecolor'] = kw['color'] 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']} self.label1.set(**label_kw) self.label2.set(**label_kw) 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)
[docs] 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')
[docs]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 __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) # x in data coords, y in axes coords self.tick1line.set( xdata=[0], ydata=[0], transform=self.axes.get_xaxis_transform(which="tick1"), marker=self._tickmarkers[0], ) self.tick2line.set( xdata=[0], ydata=[1], transform=self.axes.get_xaxis_transform(which="tick2"), marker=self._tickmarkers[1], ) self.gridline.set( xdata=[0, 0], ydata=[0, 1], transform=self.axes.get_xaxis_transform(which="grid"), ) # the y loc is 3 points below the min of y axis trans, va, ha = self._get_text1_transform() self.label1.set( x=0, y=0, verticalalignment=va, horizontalalignment=ha, transform=trans, ) trans, va, ha = self._get_text2_transform() self.label2.set( x=0, y=1, verticalalignment=va, horizontalalignment=ha, transform=trans, ) 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): """Set tick direction. Valid values are 'in', 'out', 'inout'.""" if tickdir is None: tickdir = mpl.rcParams['%s.direction' % self.__name__.lower()] _api.check_in_list(['in', 'out', 'inout'], tickdir=tickdir) 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 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
[docs]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 __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) # x in axes coords, y in data coords self.tick1line.set( xdata=[0], ydata=[0], transform=self.axes.get_yaxis_transform(which="tick1"), marker=self._tickmarkers[0], ) self.tick2line.set( xdata=[1], ydata=[0], transform=self.axes.get_yaxis_transform(which="tick2"), marker=self._tickmarkers[1], ) self.gridline.set( xdata=[0, 1], ydata=[0, 0], transform=self.axes.get_yaxis_transform(which="grid"), ) # the y loc is 3 points below the min of y axis trans, va, ha = self._get_text1_transform() self.label1.set( x=0, y=0, verticalalignment=va, horizontalalignment=ha, transform=trans, ) trans, va, ha = self._get_text2_transform() self.label2.set( x=1, y=0, verticalalignment=va, horizontalalignment=ha, transform=trans, ) 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: tickdir = mpl.rcParams['%s.direction' % self.__name__.lower()] 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._pad = self._base_pad + self.get_tick_padding() self.stale = True 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 return self.axes.viewLim.intervaly
[docs]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): raise TypeError('locator must be a subclass of ' 'matplotlib.ticker.Locator') self._locator = locator @property def formatter(self): return self._formatter @formatter.setter def formatter(self, formatter): if not isinstance(formatter, mticker.Formatter): raise TypeError('formatter must be a subclass of ' 'matplotlib.ticker.Formatter') self._formatter = formatter
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 = [] tick = instance._get_tick(major=False) instance.minorTicks.append(tick) return instance.minorTicks
[docs]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`. """ super().__init__() self._remove_overlapping_locs = True self.set_figure(axes.figure) 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 = mtext.Text( np.nan, np.nan, fontsize=mpl.rcParams['axes.labelsize'], fontweight=mpl.rcParams['axes.labelweight'], color=mpl.rcParams['axes.labelcolor'], ) self._set_artist_props(self.label) self.offsetText = mtext.Text(np.nan, np.nan) self._set_artist_props(self.offsetText) self.labelpad = mpl.rcParams['axes.labelpad'] 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)
[docs] def get_remove_overlapping_locs(self): return self._remove_overlapping_locs
[docs] 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.'))
[docs] 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()
[docs] def get_scale(self): """Return this Axis' scale (as a str).""" return self._scale.name
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
[docs] def limit_range_for_scale(self, vmin, vmax): return self._scale.limit_range_for_scale(vmin, vmax, self.get_minpos())
def get_children(self): return [self.label, self.offsetText, *self.get_major_ticks(), *self.get_minor_ticks()]
[docs] 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" self.callbacks = cbook.CallbackRegistry() # whether the grids are on self._gridOnMajor = ( mpl.rcParams['axes.grid'] and mpl.rcParams['axes.grid.which'] in ('both', 'major')) self._gridOnMinor = ( mpl.rcParams['axes.grid'] and mpl.rcParams['axes.grid.which'] in ('both', 'minor')) self.reset_ticks() self.converter = None self.units = None self.set_units(None) self.stale = True
[docs] 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
[docs] def set_tick_params(self, which='major', reset=False, **kw): """ Set appearance parameters for ticks, ticklabels, and gridlines. For documentation of keyword arguments, see :meth:`matplotlib.axes.Axes.tick_params`. """ _api.check_in_list(['major', 'minor', 'both'], which=which) kwtrans = self._translate_tick_kw(kw) # the kwargs are stored in self._major/minor_tick_kw so that any # future new ticks will automatically get them if reset: if which in ['major', 'both']: self._major_tick_kw.clear() self._major_tick_kw.update(kwtrans) if which in ['minor', 'both']: self._minor_tick_kw.clear() self._minor_tick_kw.update(kwtrans) self.reset_ticks() else: if which in ['major', 'both']: self._major_tick_kw.update(kwtrans) for tick in self.majorTicks: tick._apply_params(**kwtrans) if which in ['minor', 'both']: self._minor_tick_kw.update(kwtrans) for tick in self.minorTicks: tick._apply_params(**kwtrans) # labelOn and labelcolor also apply to the offset text. if 'label1On' in kwtrans or 'label2On' in kwtrans: self.offsetText.set_visible( self._major_tick_kw.get('label1On', False) or self._major_tick_kw.get('label2On', False)) if 'labelcolor' in kwtrans: self.offsetText.set_color(kwtrans['labelcolor']) self.stale = True
@staticmethod def _translate_tick_kw(kw): # The following lists may be moved to a more accessible location. kwkeys = ['size', 'width', 'color', 'tickdir', 'pad', 'labelsize', 'labelcolor', 'zorder', 'gridOn', 'tick1On', 'tick2On', 'label1On', 'label2On', 'length', 'direction', 'left', 'bottom', 'right', 'top', 'labelleft', 'labelbottom', 'labelright', 'labeltop', 'labelrotation'] + _gridline_param_names kwtrans = {} if 'length' in kw: kwtrans['size'] = kw.pop('length') if 'direction' in kw: kwtrans['tickdir'] = kw.pop('direction') if 'rotation' in kw: kwtrans['labelrotation'] = kw.pop('rotation') if 'left' in kw: kwtrans['tick1On'] = kw.pop('left') if 'bottom' in kw: kwtrans['tick1On'] = kw.pop('bottom') if 'right' in kw: kwtrans['tick2On'] = kw.pop('right') if 'top' in kw: kwtrans['tick2On'] = kw.pop('top') if 'labelleft' in kw: kwtrans['label1On'] = kw.pop('labelleft') if 'labelbottom' in kw: kwtrans['label1On'] = kw.pop('labelbottom') if 'labelright' in kw: kwtrans['label2On'] = kw.pop('labelright') if 'labeltop' in kw: kwtrans['label2On'] = kw.pop('labeltop') if 'colors' in kw: c = kw.pop('colors') kwtrans['color'] = c kwtrans['labelcolor'] = c # Maybe move the checking up to the caller of this method. for key in kw: if key not in kwkeys: raise ValueError( "keyword %s is not recognized; valid keywords are %s" % (key, kwkeys)) kwtrans.update(kw) return kwtrans def set_clip_path(self, clippath, transform=None): super().set_clip_path(clippath, transform) for child in self.majorTicks + self.minorTicks: child.set_clip_path(clippath, transform) self.stale = True
[docs] def get_view_interval(self): """Return the view limits ``(min, max)`` of this axis.""" raise NotImplementedError('Derived must override')
[docs] def set_view_interval(self, vmin, vmax, ignore=False): """ Set the axis view limits. This method is for internal use; Matplotlib users should typically use e.g. `~.Axes.set_xlim` or `~.Axes.set_ylim`. If *ignore* is False (the default), this method will never reduce the preexisting view limits, only expand them if *vmin* or *vmax* are not within them. Moreover, the order of *vmin* and *vmax* does not matter; the orientation of the axis will not change. If *ignore* is True, the view limits will be set exactly to ``(vmin, vmax)`` in that order. """ raise NotImplementedError('Derived must override')
[docs] def get_data_interval(self): """Return the Interval instance for this axis data limits.""" raise NotImplementedError('Derived must override')
[docs] def set_data_interval(self, vmin, vmax, ignore=False): """ Set the axis data limits. This method is for internal use. If *ignore* is False (the default), this method will never reduce the preexisting data limits, only expand them if *vmin* or *vmax* are not within them. Moreover, the order of *vmin* and *vmax* does not matter; the orientation of the axis will not change. If *ignore* is True, the data limits will be set exactly to ``(vmin, vmax)`` in that order. """ raise NotImplementedError('Derived must override')
def get_inverted(self): """ Return whether this Axis is oriented in the "inverse" direction. The "normal" direction is increasing to the right for the x-axis and to the top for the y-axis; the "inverse" direction is increasing to the left for the x-axis and to the bottom for the y-axis. """ low, high = self.get_view_interval() return high < low def set_inverted(self, inverted): """ Set whether this Axis is oriented in the "inverse" direction. The "normal" direction is increasing to the right for the x-axis and to the top for the y-axis; the "inverse" direction is increasing to the left for the x-axis and to the bottom for the y-axis. """ # Currently, must be implemented in subclasses using set_xlim/set_ylim # rather than generically using set_view_interval, so that shared # axes get updated as well. raise NotImplementedError('Derived must override')
[docs] def set_default_intervals(self): """ Set the default limits for the axis data and view interval if they have not been not mutated yet. """
# this is mainly in support of custom object plotting. For # example, if someone passes in a datetime object, we do not # know automagically how to set the default min/max of the # data and view limits. The unit conversion AxisInfo # interface provides a hook for custom types to register # default limits through the AxisInfo.default_limits # attribute, and the derived code below will check for that # and use it if is available (else just use 0..1) def _set_artist_props(self, a): if a is None: return a.set_figure(self.figure)
[docs] def get_ticklabel_extents(self, renderer): """ Get the extents of the tick labels on either side of the axes. """ ticks_to_draw = self._update_ticks() ticklabelBoxes, ticklabelBoxes2 = self._get_tick_bboxes(ticks_to_draw, renderer) if len(ticklabelBoxes): bbox = mtransforms.Bbox.union(ticklabelBoxes) else: bbox = mtransforms.Bbox.from_extents(0, 0, 0, 0) if len(ticklabelBoxes2): bbox2 = mtransforms.Bbox.union(ticklabelBoxes2) else: bbox2 = mtransforms.Bbox.from_extents(0, 0, 0, 0) return bbox, bbox2
[docs] @cbook.deprecated("3.2") def set_smart_bounds(self, value): """Set the axis to have smart bounds.""" self._smart_bounds = value self.stale = True
[docs] @cbook.deprecated("3.2") def get_smart_bounds(self): """Return whether the axis has smart bounds.""" return self._smart_bounds
def _update_ticks(self): """ Update ticks (position and labels) using the current data interval of the axes. Return the list of ticks that will be drawn. """ major_locs = self.get_majorticklocs() major_labels = self.major.formatter.format_ticks(major_locs) major_ticks = self.get_major_ticks(len(major_locs)) self.major.formatter.set_locs(major_locs) for tick, loc, label in zip(major_ticks, major_locs, major_labels): tick.update_position(loc) tick.set_label1(label) tick.set_label2(label) minor_locs = self.get_minorticklocs() minor_labels = self.minor.formatter.format_ticks(minor_locs) minor_ticks = self.get_minor_ticks(len(minor_locs)) self.minor.formatter.set_locs(minor_locs) for tick, loc, label in zip(minor_ticks, minor_locs, minor_labels): tick.update_position(loc) tick.set_label1(label) tick.set_label2(label) ticks = [*major_ticks, *minor_ticks] view_low, view_high = self.get_view_interval() if view_low > view_high: view_low, view_high = view_high, view_low if self._smart_bounds and ticks: # _smart_bounds is deprecated in 3.2 # handle inverted limits data_low, data_high = sorted(self.get_data_interval()) locs = np.sort([tick.get_loc() for tick in ticks]) if data_low <= view_low: # data extends beyond view, take view as limit ilow = view_low else: # data stops within view, take best tick good_locs = locs[locs <= data_low] if len(good_locs): # last tick prior or equal to first data point ilow = good_locs[-1] else: # No ticks (why not?), take first tick ilow = locs[0] if data_high >= view_high: # data extends beyond view, take view as limit ihigh = view_high else: # data stops within view, take best tick good_locs = locs[locs >= data_high] if len(good_locs): # first tick after or equal to last data point ihigh = good_locs[0] else: # No ticks (why not?), take last tick ihigh = locs[-1] ticks = [tick for tick in ticks if ilow <= tick.get_loc() <= ihigh] interval_t = self.get_transform().transform([view_low, view_high]) ticks_to_draw = [] for tick in ticks: try: loc_t = self.get_transform().transform(tick.get_loc()) except AssertionError: # transforms.transform doesn't allow masked values but # some scales might make them, so we need this try/except. pass else: if mtransforms._interval_contains_close(interval_t, loc_t): ticks_to_draw.append(tick) return ticks_to_draw def _get_tick_bboxes(self, ticks, renderer): """Return lists of bboxes for ticks' label1's and label2's.""" return ([tick.label1.get_window_extent(renderer) for tick in ticks if tick.label1.get_visible()], [tick.label2.get_window_extent(renderer) for tick in ticks if tick.label2.get_visible()])
[docs] def get_tightbbox(self, renderer, *, for_layout_only=False): """ Return a bounding box that encloses the axis. It only accounts tick labels, axis label, and offsetText. If *for_layout_only* is True, then the width of the label (if this is an x-axis) or the height of the label (if this is a y-axis) is collapsed to near zero. This allows tight/constrained_layout to ignore too-long labels when doing their layout. """ if not self.get_visible(): return ticks_to_draw = self._update_ticks() self._update_label_position(renderer) # go back to just this axis's tick labels ticklabelBoxes, ticklabelBoxes2 = self._get_tick_bboxes( ticks_to_draw, renderer) self._update_offset_text_position(ticklabelBoxes, ticklabelBoxes2) self.offsetText.set_text(self.major.formatter.get_offset()) bboxes = [ *(a.get_window_extent(renderer) for a in [self.offsetText] if a.get_visible()), *ticklabelBoxes, *ticklabelBoxes2, ] # take care of label if self.label.get_visible(): bb = self.label.get_window_extent(renderer) # for constrained/tight_layout, we want to ignore the label's # width/height because the adjustments they make can't be improved. # this code collapses the relevant direction if for_layout_only: if self.axis_name == "x" and bb.width > 0: bb.x0 = (bb.x0 + bb.x1) / 2 - 0.5 bb.x1 = bb.x0 + 1.0 if self.axis_name == "y" and bb.height > 0: bb.y0 = (bb.y0 + bb.y1) / 2 - 0.5 bb.y1 = bb.y0 + 1.0 bboxes.append(bb) bboxes = [b for b in bboxes if 0 < b.width < np.inf and 0 < b.height < np.inf] if bboxes: return mtransforms.Bbox.union(bboxes) else: return None
[docs] def get_tick_padding(self): values = [] if len(self.majorTicks): values.append(self.majorTicks[0].get_tick_padding()) if len(self.minorTicks): values.append(self.minorTicks[0].get_tick_padding()) return max(values, default=0)
@martist.allow_rasterization def draw(self, renderer, *args, **kwargs): # docstring inherited if not self.get_visible(): return renderer.open_group(__name__, gid=self.get_gid()) ticks_to_draw = self._update_ticks() ticklabelBoxes, ticklabelBoxes2 = self._get_tick_bboxes(ticks_to_draw, renderer) for tick in ticks_to_draw: tick.draw(renderer) # scale up the axis label box to also find the neighbors, not # just the tick labels that actually overlap note we need a # *copy* of the axis label box because we don't want to scale # the actual bbox self._update_label_position(renderer) self.label.draw(renderer) self._update_offset_text_position(ticklabelBoxes, ticklabelBoxes2) self.offsetText.set_text(self.major.formatter.get_offset()) self.offsetText.draw(renderer) renderer.close_group(__name__) self.stale = False
[docs] def get_gridlines(self): r"""Return this Axis' grid lines as a list of `.Line2D`\s.""" ticks = self.get_major_ticks() return cbook.silent_list('Line2D gridline', [tick.gridline for tick in ticks])
def get_label(self): """Return the axis label as a Text instance.""" return self.label
[docs] def get_offset_text(self): """Return the axis offsetText as a Text instance.""" return self.offsetText
[docs] def get_pickradius(self): """Return the depth of the axis used by the picker.""" return self.pickradius
[docs] def get_majorticklabels(self): """Return this Axis' major tick labels, as a list of `~.text.Text`.""" ticks = self.get_major_ticks() labels1 = [tick.label1 for tick in ticks if tick.label1.get_visible()] labels2 = [tick.label2 for tick in ticks if tick.label2.get_visible()] return labels1 + labels2
[docs] def get_minorticklabels(self): """Return this Axis' minor tick labels, as a list of `~.text.Text`.""" ticks = self.get_minor_ticks() labels1 = [tick.label1 for tick in ticks if tick.label1.get_visible()] labels2 = [tick.label2 for tick in ticks if tick.label2.get_visible()] return labels1 + labels2
[docs] def get_ticklabels(self, minor=False, which=None): """ Get this Axis' tick labels. Parameters ---------- minor : bool Whether to return the minor or the major ticklabels. which : None, ('minor', 'major', 'both') Overrides *minor*. Selects which ticklabels to return Returns ------- list of `~matplotlib.text.Text` Notes ----- The tick label strings are not populated until a ``draw`` method has been called. See also: `~.pyplot.draw` and `~.FigureCanvasBase.draw`. """ if which is not None: if which == 'minor': return self.get_minorticklabels() elif which == 'major': return self.get_majorticklabels() elif which == 'both': return self.get_majorticklabels() + self.get_minorticklabels() else: _api.check_in_list(['major', 'minor', 'both'], which=which) if minor: return self.get_minorticklabels() return self.get_majorticklabels()
[docs] def get_majorticklines(self): r"""Return this Axis' major tick lines as a list of `.Line2D`\s.""" lines = [] ticks = self.get_major_ticks() for tick in ticks: lines.append(tick.tick1line) lines.append(tick.tick2line) return cbook.silent_list('Line2D ticklines', lines)
[docs] def get_minorticklines(self): r"""Return this Axis' minor tick lines as a list of `.Line2D`\s.""" lines = [] ticks = self.get_minor_ticks() for tick in ticks: lines.append(tick.tick1line) lines.append(tick.tick2line) return cbook.silent_list('Line2D ticklines', lines)
[docs] def get_ticklines(self, minor=False): r"""Return this Axis' tick lines as a list of `.Line2D`\s.""" if minor: return self.get_minorticklines() return self.get_majorticklines()
[docs] def get_majorticklocs(self): """Return this Axis' major tick locations in data coordinates.""" return self.major.locator()
[docs] def get_minorticklocs(self): """Return this Axis' minor tick locations in data coordinates.""" # Remove minor ticks duplicating major ticks. major_locs = self.major.locator() minor_locs = self.minor.locator() transform = self._scale.get_transform() tr_minor_locs = transform.transform(minor_locs) tr_major_locs = transform.transform(major_locs) lo, hi = sorted(transform.transform(self.get_view_interval())) # Use the transformed view limits as scale. 1e-5 is the default rtol # for np.isclose. tol = (hi - lo) * 1e-5 if self.remove_overlapping_locs: minor_locs = [ loc for loc, tr_loc in zip(minor_locs, tr_minor_locs) if ~np.isclose(tr_loc, tr_major_locs, atol=tol, rtol=0).any()] return minor_locs
[docs] @cbook._make_keyword_only("3.3", "minor") def get_ticklocs(self, minor=False): """Return this Axis' tick locations in data coordinates.""" return self.get_minorticklocs() if minor else self.get_majorticklocs()
def get_ticks_direction(self, minor=False): """ Get the tick directions as a numpy array Parameters ---------- minor : bool, default: False True to return the minor tick directions, False to return the major tick directions. Returns ------- numpy array of tick directions """ if minor: return np.array( [tick._tickdir for tick in self.get_minor_ticks()]) else: return np.array( [tick._tickdir for tick in self.get_major_ticks()]) def _get_tick(self, major): """Return the default tick instance.""" raise NotImplementedError('derived must override') def _get_tick_label_size(self, axis_name): """ Return the text size of tick labels for this Axis. This is a convenience function to avoid having to create a `Tick` in `.get_tick_space`, since it is expensive. """ tick_kw = self._major_tick_kw size = tick_kw.get('labelsize', mpl.rcParams[f'{axis_name}tick.labelsize']) return mtext.FontProperties(size=size).get_size_in_points() def _copy_tick_props(self, src, dest): """Copy the properties from *src* tick to *dest* tick.""" if src is None or dest is None: return dest.label1.update_from(src.label1) dest.label2.update_from(src.label2) dest.tick1line.update_from(src.tick1line) dest.tick2line.update_from(src.tick2line) dest.gridline.update_from(src.gridline)
[docs] def get_label_text(self): """Get the text of the label.""" return self.label.get_text()
[docs] def get_major_locator(self): """Get the locator of the major ticker.""" return self.major.locator
[docs] def get_minor_locator(self): """Get the locator of the minor ticker.""" return self.minor.locator
[docs] def get_major_formatter(self): """Get the formatter of the major ticker.""" return self.major.formatter
[docs] def get_minor_formatter(self): """Get the formatter of the minor ticker.""" return self.minor.formatter
[docs] def get_major_ticks(self, numticks=None): r"""Return the list of major `.Tick`\s.""" if numticks is None: numticks = len(self.get_majorticklocs()) while len(self.majorTicks) < numticks: # Update the new tick label properties from the old. tick = self._get_tick(major=True) self.majorTicks.append(tick) tick.gridline.set_visible(self._gridOnMajor) self._copy_tick_props(self.majorTicks[0], tick) return self.majorTicks[:numticks]
[docs] def get_minor_ticks(self, numticks=None): r"""Return the list of minor `.Tick`\s.""" if numticks is None: numticks = len(self.get_minorticklocs()) while len(self.minorTicks) < numticks: # Update the new tick label properties from the old. tick = self._get_tick(major=False) self.minorTicks.append(tick) tick.gridline.set_visible(self._gridOnMinor) self._copy_tick_props(self.minorTicks[0], tick) return self.minorTicks[:numticks]
[docs] def grid(self, b=None, which='major', **kwargs): """ Configure the grid lines. Parameters ---------- b : bool or None Whether to show the grid lines. If any *kwargs* are supplied, it is assumed you want the grid on and *b* will be set to True. If *b* is *None* and there are no *kwargs*, this toggles the visibility of the lines. which : {'major', 'minor', 'both'} The grid lines to apply the changes on. **kwargs : `.Line2D` properties Define the line properties of the grid, e.g.:: grid(color='r', linestyle='-', linewidth=2) """ if len(kwargs): if not b and b is not None: # something false-like but not None cbook._warn_external('First parameter to grid() is false, ' 'but line properties are supplied. The ' 'grid will be enabled.') b = True which = which.lower() _api.check_in_list(['major', 'minor', 'both'], which=which) gridkw = {'grid_' + item[0]: item[1] for item in kwargs.items()} if which in ['minor', 'both']: if b is None: self._gridOnMinor = not self._gridOnMinor else: self._gridOnMinor = b self.set_tick_params(which='minor', gridOn=self._gridOnMinor, **gridkw) if which in ['major', 'both']: if b is None: self._gridOnMajor = not self._gridOnMajor else: self._gridOnMajor = b self.set_tick_params(which='major', gridOn=self._gridOnMajor, **gridkw) self.stale = True
[docs] def update_units(self, data): """ Introspect *data* for units converter and update the axis.converter instance if necessary. Return *True* if *data* is registered for unit conversion. """ converter = munits.registry.get_converter(data) if converter is None: return False neednew = self.converter != converter self.converter = converter default = self.converter.default_units(data, self) if default is not None and self.units is None: self.set_units(default) if neednew: self._update_axisinfo() self.stale = True return True
def _update_axisinfo(self): """ Check the axis converter for the stored units to see if the axis info needs to be updated. """ if self.converter is None: return info = self.converter.axisinfo(self.units, self) if info is None: return if info.majloc is not None and \ self.major.locator != info.majloc and self.isDefault_majloc: self.set_major_locator(info.majloc) self.isDefault_majloc = True if info.minloc is not None and \ self.minor.locator != info.minloc and self.isDefault_minloc: self.set_minor_locator(info.minloc) self.isDefault_minloc = True if info.majfmt is not None and \ self.major.formatter != info.majfmt and self.isDefault_majfmt: self.set_major_formatter(info.majfmt) self.isDefault_majfmt = True if info.minfmt is not None and \ self.minor.formatter != info.minfmt and self.isDefault_minfmt: self.set_minor_formatter(info.minfmt) self.isDefault_minfmt = True if info.label is not None and self.isDefault_label: self.set_label_text(info.label) self.isDefault_label = True self.set_default_intervals() def have_units(self): return self.converter is not None or self.units is not None
[docs] def convert_units(self, x): # If x is natively supported by Matplotlib, doesn't need converting if munits._is_natively_supported(x): return x if self.converter is None: self.converter = munits.registry.get_converter(x) if self.converter is None: return x try: ret = self.converter.convert(x, self.units, self) except Exception as e: raise munits.ConversionError('Failed to convert value(s) to axis ' f'units: {x!r}') from e return ret
[docs] def set_units(self, u): """ Set the units for axis. Parameters ---------- u : units tag Notes ----- The units of any shared axis will also be updated. """ if u == self.units: return if self is self.axes.xaxis: shared = [ ax.xaxis for ax in self.axes.get_shared_x_axes().get_siblings(self.axes) ] elif self is self.axes.yaxis: shared = [ ax.yaxis for ax in self.axes.get_shared_y_axes().get_siblings(self.axes) ] else: shared = [self] for axis in shared: axis.units = u axis._update_axisinfo() axis.callbacks.process('units') axis.callbacks.process('units finalize') axis.stale = True
[docs] def get_units(self): """Return the units for axis.""" return self.units
[docs] def set_label_text(self, label, fontdict=None, **kwargs): """ Set the text value of the axis label. Parameters ---------- label : str Text string. fontdict : dict Text properties. **kwargs Merged into fontdict. """ self.isDefault_label = False self.label.set_text(label) if fontdict is not None: self.label.update(fontdict) self.label.update(kwargs) self.stale = True return self.label
[docs] def set_major_formatter(self, formatter): """ Set the formatter of the major ticker. In addition to a `~matplotlib.ticker.Formatter` instance, this also accepts a ``str`` or function. For a ``str`` a `~matplotlib.ticker.StrMethodFormatter` is used. The field used for the value must be labeled ``'x'`` and the field used for the position must be labeled ``'pos'``. See the `~matplotlib.ticker.StrMethodFormatter` documentation for more information. For a function, a `~matplotlib.ticker.FuncFormatter` is used. The function must take two inputs (a tick value ``x`` and a position ``pos``), and return a string containing the corresponding tick label. See the `~matplotlib.ticker.FuncFormatter` documentation for more information. Parameters ---------- formatter : `~matplotlib.ticker.Formatter`, ``str``, or function """ self._set_formatter(formatter, self.major)
[docs] def set_minor_formatter(self, formatter): """ Set the formatter of the minor ticker. In addition to a `~matplotlib.ticker.Formatter` instance, this also accepts a ``str`` or function. See `.Axis.set_major_formatter` for more information. Parameters ---------- formatter : `~matplotlib.ticker.Formatter`, ``str``, or function """ self._set_formatter(formatter, self.minor)
def _set_formatter(self, formatter, level): if isinstance(formatter, str): formatter = mticker.StrMethodFormatter(formatter) # Don't allow any other TickHelper to avoid easy-to-make errors, # like using a Locator instead of a Formatter. elif (callable(formatter) and not isinstance(formatter, mticker.TickHelper)): formatter = mticker.FuncFormatter(formatter) else: cbook._check_isinstance(mticker.Formatter, formatter=formatter) if (isinstance(formatter, mticker.FixedFormatter) and len(formatter.seq) > 0 and not isinstance(level.locator, mticker.FixedLocator)): cbook._warn_external('FixedFormatter should only be used together ' 'with FixedLocator') if level == self.major: self.isDefault_majfmt = False else: self.isDefault_minfmt = False level.formatter = formatter formatter.set_axis(self) self.stale = True
[docs] def set_major_locator(self, locator): """ Set the locator of the major ticker. Parameters ---------- locator : `~matplotlib.ticker.Locator` """ cbook._check_isinstance(mticker.Locator, locator=locator) self.isDefault_majloc = False self.major.locator = locator if self.major.formatter: self.major.formatter._set_locator(locator) locator.set_axis(self) self.stale = True
[docs] def set_minor_locator(self, locator): """ Set the locator of the minor ticker. Parameters ---------- locator : `~matplotlib.ticker.Locator` """ cbook._check_isinstance(mticker.Locator, locator=locator) self.isDefault_minloc = False self.minor.locator = locator if self.minor.formatter: self.minor.formatter._set_locator(locator) locator.set_axis(self) self.stale = True
[docs] def set_pickradius(self, pickradius): """ Set the depth of the axis used by the picker. Parameters ---------- pickradius : float """ self.pickradius = pickradius
# Helper for set_ticklabels. Defining it here makes it pickleable. @staticmethod def _format_with_dict(tickd, x, pos): return tickd.get(x, "")
[docs] def set_ticklabels(self, ticklabels, *, minor=False, **kwargs): r""" Set the text values of the tick labels. .. warning:: This method should only be used after fixing the tick positions using `.Axis.set_ticks`. Otherwise, the labels may end up in unexpected positions. Parameters ---------- ticklabels : sequence of str or of `.Text`\s Texts for labeling each tick location in the sequence set by `.Axis.set_ticks`; the number of labels must match the number of locations. minor : bool If True, set minor ticks instead of major ticks. **kwargs Text properties. Returns ------- list of `.Text`\s For each tick, includes ``tick.label1`` if it is visible, then ``tick.label2`` if it is visible, in that order. """ ticklabels = [t.get_text() if hasattr(t, 'get_text') else t for t in ticklabels] locator = (self.get_minor_locator() if minor else self.get_major_locator()) if isinstance(locator, mticker.FixedLocator): # Passing [] as a list of ticklabels is often used as a way to # remove all tick labels, so only error for > 0 ticklabels if len(locator.locs) != len(ticklabels) and len(ticklabels) != 0: raise ValueError( "The number of FixedLocator locations" f" ({len(locator.locs)}), usually from a call to" " set_ticks, does not match" f" the number of ticklabels ({len(ticklabels)}).") tickd = {loc: lab for loc, lab in zip(locator.locs, ticklabels)} func = functools.partial(self._format_with_dict, tickd) formatter = mticker.FuncFormatter(func) else: formatter = mticker.FixedFormatter(ticklabels) if minor: self.set_minor_formatter(formatter) locs = self.get_minorticklocs() ticks = self.get_minor_ticks(len(locs)) else: self.set_major_formatter(formatter) locs = self.get_majorticklocs() ticks = self.get_major_ticks(len(locs)) ret = [] for pos, (loc, tick) in enumerate(zip(locs, ticks)): tick.update_position(loc) tick_label = formatter(loc, pos) # deal with label1 tick.label1.set_text(tick_label) tick.label1.update(kwargs) # deal with label2 tick.label2.set_text(tick_label) tick.label2.update(kwargs) # only return visible tick labels if tick.label1.get_visible(): ret.append(tick.label1) if tick.label2.get_visible(): ret.append(tick.label2) self.stale = True return ret
# Wrapper around set_ticklabels used to generate Axes.set_x/ytickabels; can # go away once the API of Axes.set_x/yticklabels becomes consistent. @cbook._make_keyword_only("3.3", "fontdict") def _set_ticklabels(self, labels, fontdict=None, minor=False, **kwargs): """ Set this Axis' labels with list of string labels. .. warning:: This method should only be used after fixing the tick positions using `.Axis.set_ticks`. Otherwise, the labels may end up in unexpected positions. Parameters ---------- labels : list of str The label texts. fontdict : dict, optional A dictionary controlling the appearance of the ticklabels. The default *fontdict* is:: {'fontsize': rcParams['axes.titlesize'], 'fontweight': rcParams['axes.titleweight'], 'verticalalignment': 'baseline', 'horizontalalignment': loc} minor : bool, default: False Whether to set the minor ticklabels rather than the major ones. Returns ------- list of `~.Text` The labels. Other Parameters ---------------- **kwargs : `~.text.Text` properties. """ if fontdict is not None: kwargs.update(fontdict) return self.set_ticklabels(labels, minor=minor, **kwargs)
[docs] @cbook._make_keyword_only("3.2", "minor") def set_ticks(self, ticks, minor=False): """ Set this Axis' tick locations. If necessary, the view limits of the Axis are expanded so that all given ticks are visible. Parameters ---------- ticks : list of floats List of tick locations. minor : bool, default: False If ``False``, set the major ticks; if ``True``, the minor ticks. Notes ----- The mandatory expansion of the view limits is an intentional design choice to prevent the surprise of a non-visible tick. If you need other limits, you should set the limits explicitly after setting the ticks. """ # XXX if the user changes units, the information will be lost here ticks = self.convert_units(ticks) if len(ticks) > 1: xleft, xright = self.get_view_interval() if xright > xleft: self.set_view_interval(min(ticks), max(ticks)) else: self.set_view_interval(max(ticks), min(ticks)) self.axes.stale = True if minor: self.set_minor_locator(mticker.FixedLocator(ticks)) return self.get_minor_ticks(len(ticks)) else: self.set_major_locator(mticker.FixedLocator(ticks)) return self.get_major_ticks(len(ticks))
def _get_tick_boxes_siblings(self, xdir, renderer): """ Get the bounding boxes for this `.axis` and its siblings as set by `.Figure.align_xlabels` or `.Figure.align_ylablels`. By default it just gets bboxes for self. """ raise NotImplementedError('Derived must override') def _update_label_position(self, renderer): """ Update the label position based on the bounding box enclosing all the ticklabels and axis spine. """ raise NotImplementedError('Derived must override') def _update_offset_text_position(self, bboxes, bboxes2): """ Update the offset text position based on the sequence of bounding boxes of all the ticklabels. """ raise NotImplementedError('Derived must override')
[docs] @cbook.deprecated("3.3") def pan(self, numsteps): """Pan by *numsteps* (can be positive or negative).""" self.major.locator.pan(numsteps)
[docs] @cbook.deprecated("3.3") def zoom(self, direction): """Zoom in/out on axis; if *direction* is >0 zoom in, else zoom out.""" self.major.locator.zoom(direction)
[docs] def axis_date(self, tz=None): """ Set up axis ticks and labels to treat data along this Axis as dates. Parameters ---------- tz : str or `datetime.tzinfo`, default: :rc:`timezone` The timezone used to create date labels. """ # By providing a sample datetime instance with the desired timezone, # the registered converter can be selected, and the "units" attribute, # which is the timezone, can be set. if isinstance(tz, str): import dateutil.tz tz = dateutil.tz.gettz(tz) self.update_units(datetime.datetime(2009, 1, 1, 0, 0, 0, 0, tz))
[docs] def get_tick_space(self): """Return the estimated number of ticks that can fit on the axis.""" # Must be overridden in the subclass raise NotImplementedError()
def _get_ticks_position(self): """ Helper for `XAxis.get_ticks_position` and `YAxis.get_ticks_position`. Check the visibility of tick1line, label1, tick2line, and label2 on the first major and the first minor ticks, and return - 1 if only tick1line and label1 are visible (which corresponds to "bottom" for the x-axis and "left" for the y-axis); - 2 if only tick2line and label2 are visible (which corresponds to "top" for the x-axis and "right" for the y-axis); - "default" if only tick1line, tick2line and label1 are visible; - "unknown" otherwise. """ major = self.majorTicks[0] minor = self.minorTicks[0] if all(tick.tick1line.get_visible() and not tick.tick2line.get_visible() and tick.label1.get_visible() and not tick.label2.get_visible() for tick in [major, minor]): return 1 elif all(tick.tick2line.get_visible() and not tick.tick1line.get_visible() and tick.label2.get_visible() and not tick.label1.get_visible() for tick in [major, minor]): return 2 elif all(tick.tick1line.get_visible() and tick.tick2line.get_visible() and tick.label1.get_visible() and not tick.label2.get_visible() for tick in [major, minor]): return "default" else: return "unknown"
[docs] def get_label_position(self): """ Return the label position (top or bottom) """ return self.label_position
[docs] def set_label_position(self, position): """ Set the label position (top or bottom) Parameters ---------- position : {'top', 'bottom'} """ raise NotImplementedError()
[docs] def get_minpos(self): raise NotImplementedError()
def _make_getset_interval(method_name, lim_name, attr_name): """ Helper to generate ``get_{data,view}_interval`` and ``set_{data,view}_interval`` implementations. """ def getter(self): # docstring inherited. return getattr(getattr(self.axes, lim_name), attr_name) def setter(self, vmin, vmax, ignore=False): # docstring inherited. if ignore: setattr(getattr(self.axes, lim_name), attr_name, (vmin, vmax)) else: oldmin, oldmax = getter(self) if oldmin < oldmax: setter(self, min(vmin, vmax, oldmin), max(vmin, vmax, oldmax), ignore=True) else: setter(self, max(vmin, vmax, oldmin), min(vmin, vmax, oldmax), ignore=True) self.stale = True getter.__name__ = f"get_{method_name}_interval" setter.__name__ = f"set_{method_name}_interval" return getter, setter
[docs]class XAxis(Axis): __name__ = 'xaxis' axis_name = 'x' #: Read-only name identifying the axis. def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) # x in axes coords, y in display coords (to be updated at draw time by # _update_label_positions and _update_offset_text_position). self.label.set( x=0.5, y=0, verticalalignment='top', horizontalalignment='center', transform=mtransforms.blended_transform_factory( self.axes.transAxes, mtransforms.IdentityTransform()), ) self.label_position = 'bottom' self.offsetText.set( x=1, y=0, verticalalignment='top', horizontalalignment='right', transform=mtransforms.blended_transform_factory( self.axes.transAxes, mtransforms.IdentityTransform()), fontsize=mpl.rcParams['xtick.labelsize'], color=mpl.rcParams['xtick.color'], ) self.offset_text_position = 'bottom' def contains(self, mouseevent): """Test whether the mouse event occurred in the x axis.""" inside, info = self._default_contains(mouseevent) if inside is not None: return inside, info x, y = mouseevent.x, mouseevent.y try: trans = self.axes.transAxes.inverted() xaxes, yaxes = trans.transform((x, y)) except ValueError: return False, {} (l, b), (r, t) = self.axes.transAxes.transform([(0, 0), (1, 1)]) inaxis = 0 <= xaxes <= 1 and ( b - self.pickradius < y < b or t < y < t + self.pickradius) return inaxis, {} def _get_tick(self, major): if major: tick_kw = self._major_tick_kw else: tick_kw = self._minor_tick_kw return XTick(self.axes, 0, major=major, **tick_kw) def set_label_position(self, position): """ Set the label position (top or bottom) Parameters ---------- position : {'top', 'bottom'} """ self.label.set_verticalalignment(_api.check_getitem({ 'top': 'baseline', 'bottom': 'top', }, position=position)) self.label_position = position self.stale = True def _get_tick_boxes_siblings(self, renderer): """ Get the bounding boxes for this `.axis` and its siblings as set by `.Figure.align_xlabels` or `.Figure.align_ylablels`. By default it just gets bboxes for self. """ bboxes = [] bboxes2 = [] # get the Grouper that keeps track of x-label groups for this figure grp = self.figure._align_xlabel_grp # if we want to align labels from other axes: for nn, axx in enumerate(grp.get_siblings(self.axes)): ticks_to_draw = axx.xaxis._update_ticks() tlb, tlb2 = axx.xaxis._get_tick_bboxes(ticks_to_draw, renderer) bboxes.extend(tlb) bboxes2.extend(tlb2) return bboxes, bboxes2 def _update_label_position(self, renderer): """ Update the label position based on the bounding box enclosing all the ticklabels and axis spine """ if not self._autolabelpos: return # get bounding boxes for this axis and any siblings # that have been set by `fig.align_xlabels()` bboxes, bboxes2 = self._get_tick_boxes_siblings(renderer=renderer) x, y = self.label.get_position() if self.label_position == 'bottom': try: spine = self.axes.spines['bottom'] spinebbox = spine.get_transform().transform_path( spine.get_path()).get_extents() except KeyError: # use axes if spine doesn't exist spinebbox = self.axes.bbox bbox = mtransforms.Bbox.union(bboxes + [spinebbox]) bottom = bbox.y0 self.label.set_position( (x, bottom - self.labelpad * self.figure.dpi / 72) ) else: try: spine = self.axes.spines['top'] spinebbox = spine.get_transform().transform_path( spine.get_path()).get_extents() except KeyError: # use axes if spine doesn't exist spinebbox = self.axes.bbox bbox = mtransforms.Bbox.union(bboxes2 + [spinebbox]) top = bbox.y1 self.label.set_position( (x, top + self.labelpad * self.figure.dpi / 72) ) def _update_offset_text_position(self, bboxes, bboxes2): """ Update the offset_text position based on the sequence of bounding boxes of all the ticklabels """ x, y = self.offsetText.get_position() if not hasattr(self, '_tick_position'): self._tick_position = 'bottom' if self._tick_position == 'bottom': if not len(bboxes): bottom = self.axes.bbox.ymin else: bbox = mtransforms.Bbox.union(bboxes) bottom = bbox.y0 y = bottom - self.OFFSETTEXTPAD * self.figure.dpi / 72 else: if not len(bboxes2): top = self.axes.bbox.ymax else: bbox = mtransforms.Bbox.union(bboxes2) top = bbox.y1 y = top + self.OFFSETTEXTPAD * self.figure.dpi / 72 self.offsetText.set_position((x, y))
[docs] def get_text_heights(self, renderer): """ Return how much space should be reserved for text above and below the axes, as a pair of floats. """ bbox, bbox2 = self.get_ticklabel_extents(renderer) # MGDTODO: Need a better way to get the pad padPixels = self.majorTicks[0].get_pad_pixels() above = 0.0 if bbox2.height: above += bbox2.height + padPixels below = 0.0 if bbox.height: below += bbox.height + padPixels if self.get_label_position() == 'top': above += self.label.get_window_extent(renderer).height + padPixels else: below += self.label.get_window_extent(renderer).height + padPixels return above, below
[docs] def set_ticks_position(self, position): """ Set the ticks position. Parameters ---------- position : {'top', 'bottom', 'both', 'default', 'none'} 'both' sets the ticks to appear on both positions, but does not change the tick labels. 'default' resets the tick positions to the default: ticks on both positions, labels at bottom. 'none' can be used if you don't want any ticks. 'none' and 'both' affect only the ticks, not the labels. """ _api.check_in_list(['top', 'bottom', 'both', 'default', 'none'], position=position) if position == 'top': self.set_tick_params(which='both', top=True, labeltop=True, bottom=False, labelbottom=False) self._tick_position = 'top' self.offsetText.set_verticalalignment('bottom') elif position == 'bottom': self.set_tick_params(which='both', top=False, labeltop=False, bottom=True, labelbottom=True) self._tick_position = 'bottom' self.offsetText.set_verticalalignment('top') elif position == 'both': self.set_tick_params(which='both', top=True, bottom=True) elif position == 'none': self.set_tick_params(which='both', top=False, bottom=False) elif position == 'default': self.set_tick_params(which='both', top=True, labeltop=False, bottom=True, labelbottom=True) self._tick_position = 'bottom' self.offsetText.set_verticalalignment('top') else: assert False, "unhandled parameter not caught by _check_in_list" self.stale = True
[docs] def tick_top(self): """ Move ticks and ticklabels (if present) to the top of the axes. """ label = True if 'label1On' in self._major_tick_kw: label = (self._major_tick_kw['label1On'] or self._major_tick_kw['label2On']) self.set_ticks_position('top') # If labels were turned off before this was called, leave them off. self.set_tick_params(which='both', labeltop=label)
[docs] def tick_bottom(self): """ Move ticks and ticklabels (if present) to the bottom of the axes. """ label = True if 'label1On' in self._major_tick_kw: label = (self._major_tick_kw['label1On'] or self._major_tick_kw['label2On']) self.set_ticks_position('bottom') # If labels were turned off before this was called, leave them off. self.set_tick_params(which='both', labelbottom=label)
[docs] def get_ticks_position(self): """ Return the ticks position ("top", "bottom", "default", or "unknown"). """ return {1: "bottom", 2: "top", "default": "default", "unknown": "unknown"}[ self._get_ticks_position()]
get_view_interval, set_view_interval = _make_getset_interval( "view", "viewLim", "intervalx") get_data_interval, set_data_interval = _make_getset_interval( "data", "dataLim", "intervalx") def get_minpos(self): return self.axes.dataLim.minposx def set_inverted(self, inverted): # docstring inherited a, b = self.get_view_interval() # cast to bool to avoid bad interaction between python 3.8 and np.bool_ self.axes.set_xlim(sorted((a, b), reverse=bool(inverted)), auto=None) def set_default_intervals(self): # docstring inherited xmin, xmax = 0., 1. dataMutated = self.axes.dataLim.mutatedx() viewMutated = self.axes.viewLim.mutatedx() if not dataMutated or not viewMutated: if self.converter is not None: info = self.converter.axisinfo(self.units, self) if info.default_limits is not None: valmin, valmax = info.default_limits xmin = self.converter.convert(valmin, self.units, self) xmax = self.converter.convert(valmax, self.units, self) if not dataMutated: self.axes.dataLim.intervalx = xmin, xmax if not viewMutated: self.axes.viewLim.intervalx = xmin, xmax self.stale = True def get_tick_space(self): ends = self.axes.transAxes.transform([[0, 0], [1, 0]]) length = ((ends[1][0] - ends[0][0]) / self.axes.figure.dpi) * 72 # There is a heuristic here that the aspect ratio of tick text # is no more than 3:1 size = self._get_tick_label_size('x') * 3 if size > 0: return int(np.floor(length / size)) else: return 2**31 - 1
[docs]class YAxis(Axis): __name__ = 'yaxis' axis_name = 'y' #: Read-only name identifying the axis. def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) # x in display coords, y in axes coords (to be updated at draw time by # _update_label_positions and _update_offset_text_position). self.label.set( x=0, y=0.5, verticalalignment='bottom', horizontalalignment='center', rotation='vertical', rotation_mode='anchor', transform=mtransforms.blended_transform_factory( mtransforms.IdentityTransform(), self.axes.transAxes), ) self.label_position = 'left' # x in axes coords, y in display coords(!). self.offsetText.set( x=0, y=0.5, verticalalignment='baseline', horizontalalignment='left', transform=mtransforms.blended_transform_factory( self.axes.transAxes, mtransforms.IdentityTransform()), fontsize=mpl.rcParams['ytick.labelsize'], color=mpl.rcParams['ytick.color'], ) self.offset_text_position = 'left' def contains(self, mouseevent): # docstring inherited inside, info = self._default_contains(mouseevent) if inside is not None: return inside, info x, y = mouseevent.x, mouseevent.y try: trans = self.axes.transAxes.inverted() xaxes, yaxes = trans.transform((x, y)) except ValueError: return False, {} (l, b), (r, t) = self.axes.transAxes.transform([(0, 0), (1, 1)]) inaxis = 0 <= yaxes <= 1 and ( l - self.pickradius < x < l or r < x < r + self.pickradius) return inaxis, {} def _get_tick(self, major): if major: tick_kw = self._major_tick_kw else: tick_kw = self._minor_tick_kw return YTick(self.axes, 0, major=major, **tick_kw) def set_label_position(self, position): """ Set the label position (left or right) Parameters ---------- position : {'left', 'right'} """ self.label.set_rotation_mode('anchor') self.label.set_horizontalalignment('center') self.label.set_verticalalignment(_api.check_getitem({ 'left': 'bottom', 'right': 'top', }, position=position)) self.label_position = position self.stale = True def _get_tick_boxes_siblings(self, renderer): """ Get the bounding boxes for this `.axis` and its siblings as set by `.Figure.align_xlabels` or `.Figure.align_ylablels`. By default it just gets bboxes for self. """ bboxes = [] bboxes2 = [] # get the Grouper that keeps track of y-label groups for this figure grp = self.figure._align_ylabel_grp # if we want to align labels from other axes: for axx in grp.get_siblings(self.axes): ticks_to_draw = axx.yaxis._update_ticks() tlb, tlb2 = axx.yaxis._get_tick_bboxes(ticks_to_draw, renderer) bboxes.extend(tlb) bboxes2.extend(tlb2) return bboxes, bboxes2 def _update_label_position(self, renderer): """ Update the label position based on the bounding box enclosing all the ticklabels and axis spine """ if not self._autolabelpos: return # get bounding boxes for this axis and any siblings # that have been set by `fig.align_ylabels()` bboxes, bboxes2 = self._get_tick_boxes_siblings(renderer=renderer) x, y = self.label.get_position() if self.label_position == 'left': try: spine = self.axes.spines['left'] spinebbox = spine.get_transform().transform_path( spine.get_path()).get_extents() except KeyError: # use axes if spine doesn't exist spinebbox = self.axes.bbox bbox = mtransforms.Bbox.union(bboxes + [spinebbox]) left = bbox.x0 self.label.set_position( (left - self.labelpad * self.figure.dpi / 72, y) ) else: try: spine = self.axes.spines['right'] spinebbox = spine.get_transform().transform_path( spine.get_path()).get_extents() except KeyError: # use axes if spine doesn't exist spinebbox = self.axes.bbox bbox = mtransforms.Bbox.union(bboxes2 + [spinebbox]) right = bbox.x1 self.label.set_position( (right + self.labelpad * self.figure.dpi / 72, y) ) def _update_offset_text_position(self, bboxes, bboxes2): """ Update the offset_text position based on the sequence of bounding boxes of all the ticklabels """ x, y = self.offsetText.get_position() top = self.axes.bbox.ymax self.offsetText.set_position( (x, top + self.OFFSETTEXTPAD * self.figure.dpi / 72) )
[docs] def set_offset_position(self, position): """ Parameters ---------- position : {'left', 'right'} """ x, y = self.offsetText.get_position() x = _api.check_getitem({'left': 0, 'right': 1}, position=position) self.offsetText.set_ha(position) self.offsetText.set_position((x, y)) self.stale = True
[docs] def get_text_widths(self, renderer): bbox, bbox2 = self.get_ticklabel_extents(renderer) # MGDTODO: Need a better way to get the pad padPixels = self.majorTicks[0].get_pad_pixels() left = 0.0 if bbox.width: left += bbox.width + padPixels right = 0.0 if bbox2.width: right += bbox2.width + padPixels if self.get_label_position() == 'left': left += self.label.get_window_extent(renderer).width + padPixels else: right += self.label.get_window_extent(renderer).width + padPixels return left, right
[docs] def set_ticks_position(self, position): """ Set the ticks position. Parameters ---------- position : {'left', 'right', 'both', 'default', 'none'} 'both' sets the ticks to appear on both positions, but does not change the tick labels. 'default' resets the tick positions to the default: ticks on both positions, labels at left. 'none' can be used if you don't want any ticks. 'none' and 'both' affect only the ticks, not the labels. """ _api.check_in_list(['left', 'right', 'both', 'default', 'none'], position=position) if position == 'right': self.set_tick_params(which='both', right=True, labelright=True, left=False, labelleft=False) self.set_offset_position(position) elif position == 'left': self.set_tick_params(which='both', right=False, labelright=False, left=True, labelleft=True) self.set_offset_position(position) elif position == 'both': self.set_tick_params(which='both', right=True, left=True) elif position == 'none': self.set_tick_params(which='both', right=False, left=False) elif position == 'default': self.set_tick_params(which='both', right=True, labelright=False, left=True, labelleft=True) else: assert False, "unhandled parameter not caught by _check_in_list" self.stale = True
[docs] def tick_right(self): """ Move ticks and ticklabels (if present) to the right of the axes. """ label = True if 'label1On' in self._major_tick_kw: label = (self._major_tick_kw['label1On'] or self._major_tick_kw['label2On']) self.set_ticks_position('right') # if labels were turned off before this was called # leave them off self.set_tick_params(which='both', labelright=label)
[docs] def tick_left(self): """ Move ticks and ticklabels (if present) to the left of the axes. """ label = True if 'label1On' in self._major_tick_kw: label = (self._major_tick_kw['label1On'] or self._major_tick_kw['label2On']) self.set_ticks_position('left') # if labels were turned off before this was called # leave them off self.set_tick_params(which='both', labelleft=label)
[docs] def get_ticks_position(self): """ Return the ticks position ("left", "right", "default", or "unknown"). """ return {1: "left", 2: "right", "default": "default", "unknown": "unknown"}[ self._get_ticks_position()]
get_view_interval, set_view_interval = _make_getset_interval( "view", "viewLim", "intervaly") get_data_interval, set_data_interval = _make_getset_interval( "data", "dataLim", "intervaly") def get_minpos(self): return self.axes.dataLim.minposy def set_inverted(self, inverted): # docstring inherited a, b = self.get_view_interval() # cast to bool to avoid bad interaction between python 3.8 and np.bool_ self.axes.set_ylim(sorted((a, b), reverse=bool(inverted)), auto=None) def set_default_intervals(self): # docstring inherited ymin, ymax = 0., 1. dataMutated = self.axes.dataLim.mutatedy() viewMutated = self.axes.viewLim.mutatedy() if not dataMutated or not viewMutated: if self.converter is not None: info = self.converter.axisinfo(self.units, self) if info.default_limits is not None: valmin, valmax = info.default_limits ymin = self.converter.convert(valmin, self.units, self) ymax = self.converter.convert(valmax, self.units, self) if not dataMutated: self.axes.dataLim.intervaly = ymin, ymax if not viewMutated: self.axes.viewLim.intervaly = ymin, ymax self.stale = True def get_tick_space(self): ends = self.axes.transAxes.transform([[0, 0], [0, 1]]) length = ((ends[1][1] - ends[0][1]) / self.axes.figure.dpi) * 72 # Having a spacing of at least 2 just looks good. size = self._get_tick_label_size('y') * 2 if size > 0: return int(np.floor(length / size)) else: return 2**31 - 1