1067 lines
36 KiB
Python
1067 lines
36 KiB
Python
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"""
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The :mod:`.axis_artist` module implements custom artists to draw axis elements
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(axis lines and labels, tick lines and labels, grid lines).
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Axis lines and labels and tick lines and labels are managed by the `AxisArtist`
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class; grid lines are managed by the `GridlinesCollection` class.
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There is one `AxisArtist` per Axis; it can be accessed through
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the ``axis`` dictionary of the parent Axes (which should be a
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`mpl_toolkits.axislines.Axes`), e.g. ``ax.axis["bottom"]``.
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Children of the AxisArtist are accessed as attributes: ``.line`` and ``.label``
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for the axis line and label, ``.major_ticks``, ``.major_ticklabels``,
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``.minor_ticks``, ``.minor_ticklabels`` for the tick lines and labels (e.g.
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``ax.axis["bottom"].line``).
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Children properties (colors, fonts, line widths, etc.) can be set using
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setters, e.g. ::
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# Make the major ticks of the bottom axis red.
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ax.axis["bottom"].major_ticks.set_color("red")
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However, things like the locations of ticks, and their ticklabels need to be
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changed from the side of the grid_helper.
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axis_direction
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--------------
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`AxisArtist`, `AxisLabel`, `TickLabels` have an *axis_direction* attribute,
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which adjusts the location, angle, etc. The *axis_direction* must be one of
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"left", "right", "bottom", "top", and follows the Matplotlib convention for
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rectangular axis.
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For example, for the *bottom* axis (the left and right is relative to the
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direction of the increasing coordinate),
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* ticklabels and axislabel are on the right
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* ticklabels and axislabel have text angle of 0
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* ticklabels are baseline, center-aligned
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* axislabel is top, center-aligned
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The text angles are actually relative to (90 + angle of the direction to the
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ticklabel), which gives 0 for bottom axis.
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=================== ====== ======== ====== ========
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Parameter left bottom right top
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=================== ====== ======== ====== ========
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ticklabels location left right right left
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axislabel location left right right left
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ticklabels angle 90 0 -90 180
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axislabel angle 180 0 0 180
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ticklabel va center baseline center baseline
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axislabel va center top center bottom
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ticklabel ha right center right center
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axislabel ha right center right center
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=================== ====== ======== ====== ========
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Ticks are by default direct opposite side of the ticklabels. To make ticks to
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the same side of the ticklabels, ::
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ax.axis["bottom"].major_ticks.set_tick_out(True)
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The following attributes can be customized (use the ``set_xxx`` methods):
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* `Ticks`: ticksize, tick_out
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* `TickLabels`: pad
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* `AxisLabel`: pad
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"""
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# FIXME :
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# angles are given in data coordinate - need to convert it to canvas coordinate
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from operator import methodcaller
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import numpy as np
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from matplotlib import _api, rcParams
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import matplotlib.artist as martist
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import matplotlib.text as mtext
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from matplotlib.collections import LineCollection
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from matplotlib.lines import Line2D
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from matplotlib.patches import PathPatch
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from matplotlib.path import Path
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from matplotlib.transforms import (
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Affine2D, Bbox, IdentityTransform, ScaledTranslation)
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from .axisline_style import AxislineStyle
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class AttributeCopier:
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def get_ref_artist(self):
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"""
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Return the underlying artist that actually defines some properties
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(e.g., color) of this artist.
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"""
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raise RuntimeError("get_ref_artist must overridden")
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def get_attribute_from_ref_artist(self, attr_name):
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getter = methodcaller("get_" + attr_name)
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prop = getter(super())
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return getter(self.get_ref_artist()) if prop == "auto" else prop
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class Ticks(AttributeCopier, Line2D):
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"""
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Ticks are derived from Line2D, and note that ticks themselves
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are markers. Thus, you should use set_mec, set_mew, etc.
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To change the tick size (length), you need to use
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set_ticksize. To change the direction of the ticks (ticks are
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in opposite direction of ticklabels by default), use
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set_tick_out(False).
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"""
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def __init__(self, ticksize, tick_out=False, *, axis=None, **kwargs):
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self._ticksize = ticksize
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self.locs_angles_labels = []
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self.set_tick_out(tick_out)
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self._axis = axis
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if self._axis is not None:
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if "color" not in kwargs:
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kwargs["color"] = "auto"
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if "mew" not in kwargs and "markeredgewidth" not in kwargs:
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kwargs["markeredgewidth"] = "auto"
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Line2D.__init__(self, [0.], [0.], **kwargs)
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self.set_snap(True)
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def get_ref_artist(self):
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# docstring inherited
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return self._axis.majorTicks[0].tick1line
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def get_color(self):
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return self.get_attribute_from_ref_artist("color")
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def get_markeredgecolor(self):
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return self.get_attribute_from_ref_artist("markeredgecolor")
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def get_markeredgewidth(self):
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return self.get_attribute_from_ref_artist("markeredgewidth")
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def set_tick_out(self, b):
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"""Set whether ticks are drawn inside or outside the axes."""
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self._tick_out = b
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def get_tick_out(self):
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"""Return whether ticks are drawn inside or outside the axes."""
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return self._tick_out
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def set_ticksize(self, ticksize):
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"""Set length of the ticks in points."""
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self._ticksize = ticksize
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def get_ticksize(self):
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"""Return length of the ticks in points."""
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return self._ticksize
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def set_locs_angles(self, locs_angles):
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self.locs_angles = locs_angles
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_tickvert_path = Path([[0., 0.], [1., 0.]])
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def draw(self, renderer):
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if not self.get_visible():
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return
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gc = renderer.new_gc()
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gc.set_foreground(self.get_markeredgecolor())
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gc.set_linewidth(self.get_markeredgewidth())
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gc.set_alpha(self._alpha)
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path_trans = self.get_transform()
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marker_transform = (Affine2D()
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.scale(renderer.points_to_pixels(self._ticksize)))
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if self.get_tick_out():
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marker_transform.rotate_deg(180)
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for loc, angle in self.locs_angles:
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locs = path_trans.transform_non_affine(np.array([loc]))
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if self.axes and not self.axes.viewLim.contains(*locs[0]):
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continue
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renderer.draw_markers(
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gc, self._tickvert_path,
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marker_transform + Affine2D().rotate_deg(angle),
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Path(locs), path_trans.get_affine())
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gc.restore()
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class LabelBase(mtext.Text):
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"""
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A base class for AxisLabel and TickLabels. The position and angle
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of the text are calculated by to offset_ref_angle,
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text_ref_angle, and offset_radius attributes.
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"""
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def __init__(self, *args, **kwargs):
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self.locs_angles_labels = []
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self._ref_angle = 0
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self._offset_radius = 0.
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super().__init__(*args, **kwargs)
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self.set_rotation_mode("anchor")
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self._text_follow_ref_angle = True
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def _set_ref_angle(self, a):
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self._ref_angle = a
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def _get_ref_angle(self):
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return self._ref_angle
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def _get_text_ref_angle(self):
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if self._text_follow_ref_angle:
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return self._get_ref_angle()+90
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else:
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return 0 # self.get_ref_angle()
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def _get_offset_ref_angle(self):
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return self._get_ref_angle()
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def _set_offset_radius(self, offset_radius):
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self._offset_radius = offset_radius
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def _get_offset_radius(self):
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return self._offset_radius
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_get_opposite_direction = {"left": "right",
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"right": "left",
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"top": "bottom",
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"bottom": "top"}.__getitem__
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def draw(self, renderer):
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if not self.get_visible():
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return
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# save original and adjust some properties
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tr = self.get_transform()
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angle_orig = self.get_rotation()
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text_ref_angle = self._get_text_ref_angle()
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offset_ref_angle = self._get_offset_ref_angle()
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theta = np.deg2rad(offset_ref_angle)
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dd = self._get_offset_radius()
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dx, dy = dd * np.cos(theta), dd * np.sin(theta)
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self.set_transform(tr + Affine2D().translate(dx, dy))
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self.set_rotation(text_ref_angle+angle_orig)
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super().draw(renderer)
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# restore original properties
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self.set_transform(tr)
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self.set_rotation(angle_orig)
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def get_window_extent(self, renderer):
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# save original and adjust some properties
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tr = self.get_transform()
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angle_orig = self.get_rotation()
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text_ref_angle = self._get_text_ref_angle()
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offset_ref_angle = self._get_offset_ref_angle()
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theta = np.deg2rad(offset_ref_angle)
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dd = self._get_offset_radius()
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dx, dy = dd * np.cos(theta), dd * np.sin(theta)
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self.set_transform(tr + Affine2D().translate(dx, dy))
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self.set_rotation(text_ref_angle+angle_orig)
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bbox = super().get_window_extent(renderer).frozen()
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# restore original properties
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self.set_transform(tr)
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self.set_rotation(angle_orig)
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return bbox
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class AxisLabel(AttributeCopier, LabelBase):
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"""
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Axis Label. Derived from Text. The position of the text is updated
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in the fly, so changing text position has no effect. Otherwise, the
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properties can be changed as a normal Text.
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To change the pad between ticklabels and axis label, use set_pad.
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"""
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def __init__(self, *args, axis_direction="bottom", axis=None, **kwargs):
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self._axis = axis
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self._pad = 5
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self._extra_pad = 0
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LabelBase.__init__(self, *args, **kwargs)
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self.set_axis_direction(axis_direction)
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def set_pad(self, pad):
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"""
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Set the internal pad in points.
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The actual pad will be the sum of the internal pad and the
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external pad (the latter is set automatically by the AxisArtist).
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"""
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self._pad = pad
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def get_pad(self):
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"""
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Return the internal pad in points.
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See `.set_pad` for more details.
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"""
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return self._pad
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def _set_external_pad(self, p):
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"""Set external pad in pixels."""
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self._extra_pad = p
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def _get_external_pad(self):
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"""Return external pad in pixels."""
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return self._extra_pad
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def get_ref_artist(self):
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# docstring inherited
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return self._axis.get_label()
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def get_text(self):
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t = super().get_text()
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if t == "__from_axes__":
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return self._axis.get_label().get_text()
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return self._text
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_default_alignments = dict(left=("bottom", "center"),
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right=("top", "center"),
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bottom=("top", "center"),
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top=("bottom", "center"))
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def set_default_alignment(self, d):
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va, ha = _api.check_getitem(self._default_alignments, d=d)
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self.set_va(va)
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self.set_ha(ha)
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_default_angles = dict(left=180,
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right=0,
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bottom=0,
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top=180)
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def set_default_angle(self, d):
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self.set_rotation(_api.check_getitem(self._default_angles, d=d))
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def set_axis_direction(self, d):
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"""
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||
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Adjust the text angle and text alignment of axis label
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according to the matplotlib convention.
|
||
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|
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||
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===================== ========== ========= ========== ==========
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||
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property left bottom right top
|
||
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===================== ========== ========= ========== ==========
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axislabel angle 180 0 0 180
|
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axislabel va center top center bottom
|
||
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axislabel ha right center right center
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||
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===================== ========== ========= ========== ==========
|
||
|
|
|
||
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Note that the text angles are actually relative to (90 + angle
|
||
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of the direction to the ticklabel), which gives 0 for bottom
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axis.
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"""
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self.set_default_alignment(d)
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self.set_default_angle(d)
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def get_color(self):
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return self.get_attribute_from_ref_artist("color")
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def draw(self, renderer):
|
||
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if not self.get_visible():
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return
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pad = renderer.points_to_pixels(self.get_pad())
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r = self._get_external_pad() + pad
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self._set_offset_radius(r)
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super().draw(renderer)
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||
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def get_window_extent(self, renderer):
|
||
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if not self.get_visible():
|
||
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return
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||
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||
|
|
pad = renderer.points_to_pixels(self.get_pad())
|
||
|
|
r = self._get_external_pad() + pad
|
||
|
|
self._set_offset_radius(r)
|
||
|
|
|
||
|
|
bb = super().get_window_extent(renderer)
|
||
|
|
|
||
|
|
return bb
|
||
|
|
|
||
|
|
|
||
|
|
class TickLabels(AxisLabel): # mtext.Text
|
||
|
|
"""
|
||
|
|
Tick Labels. While derived from Text, this single artist draws all
|
||
|
|
ticklabels. As in AxisLabel, the position of the text is updated
|
||
|
|
in the fly, so changing text position has no effect. Otherwise,
|
||
|
|
the properties can be changed as a normal Text. Unlike the
|
||
|
|
ticklabels of the mainline matplotlib, properties of single
|
||
|
|
ticklabel alone cannot modified.
|
||
|
|
|
||
|
|
To change the pad between ticks and ticklabels, use set_pad.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self, *, axis_direction="bottom", **kwargs):
|
||
|
|
super().__init__(**kwargs)
|
||
|
|
self.set_axis_direction(axis_direction)
|
||
|
|
self._axislabel_pad = 0
|
||
|
|
|
||
|
|
def get_ref_artist(self):
|
||
|
|
# docstring inherited
|
||
|
|
return self._axis.get_ticklabels()[0]
|
||
|
|
|
||
|
|
def set_axis_direction(self, label_direction):
|
||
|
|
"""
|
||
|
|
Adjust the text angle and text alignment of ticklabels
|
||
|
|
according to the matplotlib convention.
|
||
|
|
|
||
|
|
The *label_direction* must be one of [left, right, bottom, top].
|
||
|
|
|
||
|
|
===================== ========== ========= ========== ==========
|
||
|
|
property left bottom right top
|
||
|
|
===================== ========== ========= ========== ==========
|
||
|
|
ticklabels angle 90 0 -90 180
|
||
|
|
ticklabel va center baseline center baseline
|
||
|
|
ticklabel ha right center right center
|
||
|
|
===================== ========== ========= ========== ==========
|
||
|
|
|
||
|
|
Note that the text angles are actually relative to (90 + angle
|
||
|
|
of the direction to the ticklabel), which gives 0 for bottom
|
||
|
|
axis.
|
||
|
|
"""
|
||
|
|
self.set_default_alignment(label_direction)
|
||
|
|
self.set_default_angle(label_direction)
|
||
|
|
self._axis_direction = label_direction
|
||
|
|
|
||
|
|
def invert_axis_direction(self):
|
||
|
|
label_direction = self._get_opposite_direction(self._axis_direction)
|
||
|
|
self.set_axis_direction(label_direction)
|
||
|
|
|
||
|
|
def _get_ticklabels_offsets(self, renderer, label_direction):
|
||
|
|
"""
|
||
|
|
Calculate the ticklabel offsets from the tick and their total heights.
|
||
|
|
|
||
|
|
The offset only takes account the offset due to the vertical alignment
|
||
|
|
of the ticklabels: if axis direction is bottom and va is 'top', it will
|
||
|
|
return 0; if va is 'baseline', it will return (height-descent).
|
||
|
|
"""
|
||
|
|
whd_list = self.get_texts_widths_heights_descents(renderer)
|
||
|
|
|
||
|
|
if not whd_list:
|
||
|
|
return 0, 0
|
||
|
|
|
||
|
|
r = 0
|
||
|
|
va, ha = self.get_va(), self.get_ha()
|
||
|
|
|
||
|
|
if label_direction == "left":
|
||
|
|
pad = max(w for w, h, d in whd_list)
|
||
|
|
if ha == "left":
|
||
|
|
r = pad
|
||
|
|
elif ha == "center":
|
||
|
|
r = .5 * pad
|
||
|
|
elif label_direction == "right":
|
||
|
|
pad = max(w for w, h, d in whd_list)
|
||
|
|
if ha == "right":
|
||
|
|
r = pad
|
||
|
|
elif ha == "center":
|
||
|
|
r = .5 * pad
|
||
|
|
elif label_direction == "bottom":
|
||
|
|
pad = max(h for w, h, d in whd_list)
|
||
|
|
if va == "bottom":
|
||
|
|
r = pad
|
||
|
|
elif va == "center":
|
||
|
|
r = .5 * pad
|
||
|
|
elif va == "baseline":
|
||
|
|
max_ascent = max(h - d for w, h, d in whd_list)
|
||
|
|
max_descent = max(d for w, h, d in whd_list)
|
||
|
|
r = max_ascent
|
||
|
|
pad = max_ascent + max_descent
|
||
|
|
elif label_direction == "top":
|
||
|
|
pad = max(h for w, h, d in whd_list)
|
||
|
|
if va == "top":
|
||
|
|
r = pad
|
||
|
|
elif va == "center":
|
||
|
|
r = .5 * pad
|
||
|
|
elif va == "baseline":
|
||
|
|
max_ascent = max(h - d for w, h, d in whd_list)
|
||
|
|
max_descent = max(d for w, h, d in whd_list)
|
||
|
|
r = max_descent
|
||
|
|
pad = max_ascent + max_descent
|
||
|
|
|
||
|
|
# r : offset
|
||
|
|
# pad : total height of the ticklabels. This will be used to
|
||
|
|
# calculate the pad for the axislabel.
|
||
|
|
return r, pad
|
||
|
|
|
||
|
|
_default_alignments = dict(left=("center", "right"),
|
||
|
|
right=("center", "left"),
|
||
|
|
bottom=("baseline", "center"),
|
||
|
|
top=("baseline", "center"))
|
||
|
|
|
||
|
|
_default_angles = dict(left=90,
|
||
|
|
right=-90,
|
||
|
|
bottom=0,
|
||
|
|
top=180)
|
||
|
|
|
||
|
|
def draw(self, renderer):
|
||
|
|
if not self.get_visible():
|
||
|
|
self._axislabel_pad = self._get_external_pad()
|
||
|
|
return
|
||
|
|
|
||
|
|
r, total_width = self._get_ticklabels_offsets(renderer,
|
||
|
|
self._axis_direction)
|
||
|
|
|
||
|
|
pad = (self._get_external_pad()
|
||
|
|
+ renderer.points_to_pixels(self.get_pad()))
|
||
|
|
self._set_offset_radius(r+pad)
|
||
|
|
|
||
|
|
for (x, y), a, l in self._locs_angles_labels:
|
||
|
|
if not l.strip():
|
||
|
|
continue
|
||
|
|
self._set_ref_angle(a) # + add_angle
|
||
|
|
self.set_x(x)
|
||
|
|
self.set_y(y)
|
||
|
|
self.set_text(l)
|
||
|
|
LabelBase.draw(self, renderer)
|
||
|
|
|
||
|
|
# the value saved will be used to draw axislabel.
|
||
|
|
self._axislabel_pad = total_width + pad
|
||
|
|
|
||
|
|
def set_locs_angles_labels(self, locs_angles_labels):
|
||
|
|
self._locs_angles_labels = locs_angles_labels
|
||
|
|
|
||
|
|
def get_window_extents(self, renderer):
|
||
|
|
|
||
|
|
if not self.get_visible():
|
||
|
|
self._axislabel_pad = self._get_external_pad()
|
||
|
|
return []
|
||
|
|
|
||
|
|
bboxes = []
|
||
|
|
|
||
|
|
r, total_width = self._get_ticklabels_offsets(renderer,
|
||
|
|
self._axis_direction)
|
||
|
|
|
||
|
|
pad = self._get_external_pad() + \
|
||
|
|
renderer.points_to_pixels(self.get_pad())
|
||
|
|
self._set_offset_radius(r+pad)
|
||
|
|
|
||
|
|
for (x, y), a, l in self._locs_angles_labels:
|
||
|
|
self._set_ref_angle(a) # + add_angle
|
||
|
|
self.set_x(x)
|
||
|
|
self.set_y(y)
|
||
|
|
self.set_text(l)
|
||
|
|
bb = LabelBase.get_window_extent(self, renderer)
|
||
|
|
bboxes.append(bb)
|
||
|
|
|
||
|
|
# the value saved will be used to draw axislabel.
|
||
|
|
self._axislabel_pad = total_width + pad
|
||
|
|
|
||
|
|
return bboxes
|
||
|
|
|
||
|
|
def get_texts_widths_heights_descents(self, renderer):
|
||
|
|
"""
|
||
|
|
Return a list of ``(width, height, descent)`` tuples for ticklabels.
|
||
|
|
|
||
|
|
Empty labels are left out.
|
||
|
|
"""
|
||
|
|
whd_list = []
|
||
|
|
for _loc, _angle, label in self._locs_angles_labels:
|
||
|
|
if not label.strip():
|
||
|
|
continue
|
||
|
|
clean_line, ismath = self._preprocess_math(label)
|
||
|
|
whd = renderer.get_text_width_height_descent(
|
||
|
|
clean_line, self._fontproperties, ismath=ismath)
|
||
|
|
whd_list.append(whd)
|
||
|
|
return whd_list
|
||
|
|
|
||
|
|
|
||
|
|
class GridlinesCollection(LineCollection):
|
||
|
|
def __init__(self, *args, which="major", axis="both", **kwargs):
|
||
|
|
"""
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
which : {"major", "minor"}
|
||
|
|
axis : {"both", "x", "y"}
|
||
|
|
"""
|
||
|
|
self._which = which
|
||
|
|
self._axis = axis
|
||
|
|
super().__init__(*args, **kwargs)
|
||
|
|
self.set_grid_helper(None)
|
||
|
|
|
||
|
|
def set_which(self, which):
|
||
|
|
self._which = which
|
||
|
|
|
||
|
|
def set_axis(self, axis):
|
||
|
|
self._axis = axis
|
||
|
|
|
||
|
|
def set_grid_helper(self, grid_helper):
|
||
|
|
self._grid_helper = grid_helper
|
||
|
|
|
||
|
|
def draw(self, renderer):
|
||
|
|
if self._grid_helper is not None:
|
||
|
|
self._grid_helper.update_lim(self.axes)
|
||
|
|
gl = self._grid_helper.get_gridlines(self._which, self._axis)
|
||
|
|
if gl:
|
||
|
|
self.set_segments([np.transpose(l) for l in gl])
|
||
|
|
else:
|
||
|
|
self.set_segments([])
|
||
|
|
super().draw(renderer)
|
||
|
|
|
||
|
|
|
||
|
|
class AxisArtist(martist.Artist):
|
||
|
|
"""
|
||
|
|
An artist which draws axis (a line along which the n-th axes coord
|
||
|
|
is constant) line, ticks, ticklabels, and axis label.
|
||
|
|
"""
|
||
|
|
|
||
|
|
zorder = 2.5
|
||
|
|
|
||
|
|
@_api.deprecated("3.4")
|
||
|
|
@_api.classproperty
|
||
|
|
def ZORDER(cls):
|
||
|
|
return cls.zorder
|
||
|
|
|
||
|
|
@property
|
||
|
|
def LABELPAD(self):
|
||
|
|
return self.label.get_pad()
|
||
|
|
|
||
|
|
@LABELPAD.setter
|
||
|
|
def LABELPAD(self, v):
|
||
|
|
self.label.set_pad(v)
|
||
|
|
|
||
|
|
def __init__(self, axes,
|
||
|
|
helper,
|
||
|
|
offset=None,
|
||
|
|
axis_direction="bottom",
|
||
|
|
**kwargs):
|
||
|
|
"""
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
axes : `mpl_toolkits.axisartist.axislines.Axes`
|
||
|
|
helper : `~mpl_toolkits.axisartist.axislines.AxisArtistHelper`
|
||
|
|
"""
|
||
|
|
#axes is also used to follow the axis attribute (tick color, etc).
|
||
|
|
|
||
|
|
super().__init__(**kwargs)
|
||
|
|
|
||
|
|
self.axes = axes
|
||
|
|
|
||
|
|
self._axis_artist_helper = helper
|
||
|
|
|
||
|
|
if offset is None:
|
||
|
|
offset = (0, 0)
|
||
|
|
self.offset_transform = ScaledTranslation(
|
||
|
|
*offset,
|
||
|
|
Affine2D().scale(1 / 72) # points to inches.
|
||
|
|
+ self.axes.figure.dpi_scale_trans)
|
||
|
|
|
||
|
|
if axis_direction in ["left", "right"]:
|
||
|
|
self.axis = axes.yaxis
|
||
|
|
else:
|
||
|
|
self.axis = axes.xaxis
|
||
|
|
|
||
|
|
self._axisline_style = None
|
||
|
|
self._axis_direction = axis_direction
|
||
|
|
|
||
|
|
self._init_line()
|
||
|
|
self._init_ticks(**kwargs)
|
||
|
|
self._init_offsetText(axis_direction)
|
||
|
|
self._init_label()
|
||
|
|
|
||
|
|
# axis direction
|
||
|
|
self._ticklabel_add_angle = 0.
|
||
|
|
self._axislabel_add_angle = 0.
|
||
|
|
self.set_axis_direction(axis_direction)
|
||
|
|
|
||
|
|
@_api.deprecated("3.3")
|
||
|
|
@property
|
||
|
|
def dpi_transform(self):
|
||
|
|
return Affine2D().scale(1 / 72) + self.axes.figure.dpi_scale_trans
|
||
|
|
|
||
|
|
# axis direction
|
||
|
|
|
||
|
|
def set_axis_direction(self, axis_direction):
|
||
|
|
"""
|
||
|
|
Adjust the direction, text angle, text alignment of
|
||
|
|
ticklabels, labels following the matplotlib convention for
|
||
|
|
the rectangle axes.
|
||
|
|
|
||
|
|
The *axis_direction* must be one of [left, right, bottom, top].
|
||
|
|
|
||
|
|
===================== ========== ========= ========== ==========
|
||
|
|
property left bottom right top
|
||
|
|
===================== ========== ========= ========== ==========
|
||
|
|
ticklabels location "-" "+" "+" "-"
|
||
|
|
axislabel location "-" "+" "+" "-"
|
||
|
|
ticklabels angle 90 0 -90 180
|
||
|
|
ticklabel va center baseline center baseline
|
||
|
|
ticklabel ha right center right center
|
||
|
|
axislabel angle 180 0 0 180
|
||
|
|
axislabel va center top center bottom
|
||
|
|
axislabel ha right center right center
|
||
|
|
===================== ========== ========= ========== ==========
|
||
|
|
|
||
|
|
Note that the direction "+" and "-" are relative to the direction of
|
||
|
|
the increasing coordinate. Also, the text angles are actually
|
||
|
|
relative to (90 + angle of the direction to the ticklabel),
|
||
|
|
which gives 0 for bottom axis.
|
||
|
|
"""
|
||
|
|
self.major_ticklabels.set_axis_direction(axis_direction)
|
||
|
|
self.label.set_axis_direction(axis_direction)
|
||
|
|
self._axis_direction = axis_direction
|
||
|
|
if axis_direction in ["left", "top"]:
|
||
|
|
self.set_ticklabel_direction("-")
|
||
|
|
self.set_axislabel_direction("-")
|
||
|
|
else:
|
||
|
|
self.set_ticklabel_direction("+")
|
||
|
|
self.set_axislabel_direction("+")
|
||
|
|
|
||
|
|
def set_ticklabel_direction(self, tick_direction):
|
||
|
|
r"""
|
||
|
|
Adjust the direction of the ticklabel.
|
||
|
|
|
||
|
|
Note that the *label_direction*\s '+' and '-' are relative to the
|
||
|
|
direction of the increasing coordinate.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
tick_direction : {"+", "-"}
|
||
|
|
"""
|
||
|
|
self._ticklabel_add_angle = _api.check_getitem(
|
||
|
|
{"+": 0, "-": 180}, tick_direction=tick_direction)
|
||
|
|
|
||
|
|
def invert_ticklabel_direction(self):
|
||
|
|
self._ticklabel_add_angle = (self._ticklabel_add_angle + 180) % 360
|
||
|
|
self.major_ticklabels.invert_axis_direction()
|
||
|
|
self.minor_ticklabels.invert_axis_direction()
|
||
|
|
|
||
|
|
def set_axislabel_direction(self, label_direction):
|
||
|
|
r"""
|
||
|
|
Adjust the direction of the axislabel.
|
||
|
|
|
||
|
|
Note that the *label_direction*\s '+' and '-' are relative to the
|
||
|
|
direction of the increasing coordinate.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
label_direction : {"+", "-"}
|
||
|
|
"""
|
||
|
|
self._axislabel_add_angle = _api.check_getitem(
|
||
|
|
{"+": 0, "-": 180}, label_direction=label_direction)
|
||
|
|
|
||
|
|
def get_transform(self):
|
||
|
|
return self.axes.transAxes + self.offset_transform
|
||
|
|
|
||
|
|
def get_helper(self):
|
||
|
|
"""
|
||
|
|
Return axis artist helper instance.
|
||
|
|
"""
|
||
|
|
return self._axis_artist_helper
|
||
|
|
|
||
|
|
def set_axisline_style(self, axisline_style=None, **kwargs):
|
||
|
|
"""
|
||
|
|
Set the axisline style.
|
||
|
|
|
||
|
|
The new style is completely defined by the passed attributes. Existing
|
||
|
|
style attributes are forgotten.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
axisline_style : str or None
|
||
|
|
The line style, e.g. '->', optionally followed by a comma-separated
|
||
|
|
list of attributes. Alternatively, the attributes can be provided
|
||
|
|
as keywords.
|
||
|
|
|
||
|
|
If *None* this returns a string containing the available styles.
|
||
|
|
|
||
|
|
Examples
|
||
|
|
--------
|
||
|
|
The following two commands are equal:
|
||
|
|
>>> set_axisline_style("->,size=1.5")
|
||
|
|
>>> set_axisline_style("->", size=1.5)
|
||
|
|
"""
|
||
|
|
if axisline_style is None:
|
||
|
|
return AxislineStyle.pprint_styles()
|
||
|
|
|
||
|
|
if isinstance(axisline_style, AxislineStyle._Base):
|
||
|
|
self._axisline_style = axisline_style
|
||
|
|
else:
|
||
|
|
self._axisline_style = AxislineStyle(axisline_style, **kwargs)
|
||
|
|
|
||
|
|
self._init_line()
|
||
|
|
|
||
|
|
def get_axisline_style(self):
|
||
|
|
"""Return the current axisline style."""
|
||
|
|
return self._axisline_style
|
||
|
|
|
||
|
|
def _init_line(self):
|
||
|
|
"""
|
||
|
|
Initialize the *line* artist that is responsible to draw the axis line.
|
||
|
|
"""
|
||
|
|
tran = (self._axis_artist_helper.get_line_transform(self.axes)
|
||
|
|
+ self.offset_transform)
|
||
|
|
|
||
|
|
axisline_style = self.get_axisline_style()
|
||
|
|
if axisline_style is None:
|
||
|
|
self.line = PathPatch(
|
||
|
|
self._axis_artist_helper.get_line(self.axes),
|
||
|
|
color=rcParams['axes.edgecolor'],
|
||
|
|
fill=False,
|
||
|
|
linewidth=rcParams['axes.linewidth'],
|
||
|
|
capstyle=rcParams['lines.solid_capstyle'],
|
||
|
|
joinstyle=rcParams['lines.solid_joinstyle'],
|
||
|
|
transform=tran)
|
||
|
|
else:
|
||
|
|
self.line = axisline_style(self, transform=tran)
|
||
|
|
|
||
|
|
def _draw_line(self, renderer):
|
||
|
|
self.line.set_path(self._axis_artist_helper.get_line(self.axes))
|
||
|
|
if self.get_axisline_style() is not None:
|
||
|
|
self.line.set_line_mutation_scale(self.major_ticklabels.get_size())
|
||
|
|
self.line.draw(renderer)
|
||
|
|
|
||
|
|
def _init_ticks(self, **kwargs):
|
||
|
|
axis_name = self.axis.axis_name
|
||
|
|
|
||
|
|
trans = (self._axis_artist_helper.get_tick_transform(self.axes)
|
||
|
|
+ self.offset_transform)
|
||
|
|
|
||
|
|
self.major_ticks = Ticks(
|
||
|
|
kwargs.get(
|
||
|
|
"major_tick_size", rcParams[f"{axis_name}tick.major.size"]),
|
||
|
|
axis=self.axis, transform=trans)
|
||
|
|
self.minor_ticks = Ticks(
|
||
|
|
kwargs.get(
|
||
|
|
"minor_tick_size", rcParams[f"{axis_name}tick.minor.size"]),
|
||
|
|
axis=self.axis, transform=trans)
|
||
|
|
|
||
|
|
size = rcParams[f"{axis_name}tick.labelsize"]
|
||
|
|
self.major_ticklabels = TickLabels(
|
||
|
|
axis=self.axis,
|
||
|
|
axis_direction=self._axis_direction,
|
||
|
|
figure=self.axes.figure,
|
||
|
|
transform=trans,
|
||
|
|
fontsize=size,
|
||
|
|
pad=kwargs.get(
|
||
|
|
"major_tick_pad", rcParams[f"{axis_name}tick.major.pad"]),
|
||
|
|
)
|
||
|
|
self.minor_ticklabels = TickLabels(
|
||
|
|
axis=self.axis,
|
||
|
|
axis_direction=self._axis_direction,
|
||
|
|
figure=self.axes.figure,
|
||
|
|
transform=trans,
|
||
|
|
fontsize=size,
|
||
|
|
pad=kwargs.get(
|
||
|
|
"minor_tick_pad", rcParams[f"{axis_name}tick.minor.pad"]),
|
||
|
|
)
|
||
|
|
|
||
|
|
def _get_tick_info(self, tick_iter):
|
||
|
|
"""
|
||
|
|
Return a pair of:
|
||
|
|
|
||
|
|
- list of locs and angles for ticks
|
||
|
|
- list of locs, angles and labels for ticklabels.
|
||
|
|
"""
|
||
|
|
ticks_loc_angle = []
|
||
|
|
ticklabels_loc_angle_label = []
|
||
|
|
|
||
|
|
ticklabel_add_angle = self._ticklabel_add_angle
|
||
|
|
|
||
|
|
for loc, angle_normal, angle_tangent, label in tick_iter:
|
||
|
|
angle_label = angle_tangent - 90 + ticklabel_add_angle
|
||
|
|
angle_tick = (angle_normal
|
||
|
|
if 90 <= (angle_label - angle_normal) % 360 <= 270
|
||
|
|
else angle_normal + 180)
|
||
|
|
ticks_loc_angle.append([loc, angle_tick])
|
||
|
|
ticklabels_loc_angle_label.append([loc, angle_label, label])
|
||
|
|
|
||
|
|
return ticks_loc_angle, ticklabels_loc_angle_label
|
||
|
|
|
||
|
|
def _update_ticks(self, renderer):
|
||
|
|
# set extra pad for major and minor ticklabels: use ticksize of
|
||
|
|
# majorticks even for minor ticks. not clear what is best.
|
||
|
|
|
||
|
|
dpi_cor = renderer.points_to_pixels(1.)
|
||
|
|
if self.major_ticks.get_visible() and self.major_ticks.get_tick_out():
|
||
|
|
self.major_ticklabels._set_external_pad(
|
||
|
|
self.major_ticks._ticksize * dpi_cor)
|
||
|
|
self.minor_ticklabels._set_external_pad(
|
||
|
|
self.major_ticks._ticksize * dpi_cor)
|
||
|
|
else:
|
||
|
|
self.major_ticklabels._set_external_pad(0)
|
||
|
|
self.minor_ticklabels._set_external_pad(0)
|
||
|
|
|
||
|
|
majortick_iter, minortick_iter = \
|
||
|
|
self._axis_artist_helper.get_tick_iterators(self.axes)
|
||
|
|
|
||
|
|
tick_loc_angle, ticklabel_loc_angle_label = \
|
||
|
|
self._get_tick_info(majortick_iter)
|
||
|
|
self.major_ticks.set_locs_angles(tick_loc_angle)
|
||
|
|
self.major_ticklabels.set_locs_angles_labels(ticklabel_loc_angle_label)
|
||
|
|
|
||
|
|
tick_loc_angle, ticklabel_loc_angle_label = \
|
||
|
|
self._get_tick_info(minortick_iter)
|
||
|
|
self.minor_ticks.set_locs_angles(tick_loc_angle)
|
||
|
|
self.minor_ticklabels.set_locs_angles_labels(ticklabel_loc_angle_label)
|
||
|
|
|
||
|
|
def _draw_ticks(self, renderer):
|
||
|
|
self._update_ticks(renderer)
|
||
|
|
self.major_ticks.draw(renderer)
|
||
|
|
self.major_ticklabels.draw(renderer)
|
||
|
|
self.minor_ticks.draw(renderer)
|
||
|
|
self.minor_ticklabels.draw(renderer)
|
||
|
|
if (self.major_ticklabels.get_visible()
|
||
|
|
or self.minor_ticklabels.get_visible()):
|
||
|
|
self._draw_offsetText(renderer)
|
||
|
|
|
||
|
|
_offsetText_pos = dict(left=(0, 1, "bottom", "right"),
|
||
|
|
right=(1, 1, "bottom", "left"),
|
||
|
|
bottom=(1, 0, "top", "right"),
|
||
|
|
top=(1, 1, "bottom", "right"))
|
||
|
|
|
||
|
|
def _init_offsetText(self, direction):
|
||
|
|
x, y, va, ha = self._offsetText_pos[direction]
|
||
|
|
self.offsetText = mtext.Annotation(
|
||
|
|
"",
|
||
|
|
xy=(x, y), xycoords="axes fraction",
|
||
|
|
xytext=(0, 0), textcoords="offset points",
|
||
|
|
color=rcParams['xtick.color'],
|
||
|
|
horizontalalignment=ha, verticalalignment=va,
|
||
|
|
)
|
||
|
|
self.offsetText.set_transform(IdentityTransform())
|
||
|
|
self.axes._set_artist_props(self.offsetText)
|
||
|
|
|
||
|
|
def _update_offsetText(self):
|
||
|
|
self.offsetText.set_text(self.axis.major.formatter.get_offset())
|
||
|
|
self.offsetText.set_size(self.major_ticklabels.get_size())
|
||
|
|
offset = (self.major_ticklabels.get_pad()
|
||
|
|
+ self.major_ticklabels.get_size()
|
||
|
|
+ 2)
|
||
|
|
self.offsetText.xyann = (0, offset)
|
||
|
|
|
||
|
|
def _draw_offsetText(self, renderer):
|
||
|
|
self._update_offsetText()
|
||
|
|
self.offsetText.draw(renderer)
|
||
|
|
|
||
|
|
def _init_label(self, **kwargs):
|
||
|
|
tr = (self._axis_artist_helper.get_axislabel_transform(self.axes)
|
||
|
|
+ self.offset_transform)
|
||
|
|
self.label = AxisLabel(
|
||
|
|
0, 0, "__from_axes__",
|
||
|
|
color="auto",
|
||
|
|
fontsize=kwargs.get("labelsize", rcParams['axes.labelsize']),
|
||
|
|
fontweight=rcParams['axes.labelweight'],
|
||
|
|
axis=self.axis,
|
||
|
|
transform=tr,
|
||
|
|
axis_direction=self._axis_direction,
|
||
|
|
)
|
||
|
|
self.label.set_figure(self.axes.figure)
|
||
|
|
labelpad = kwargs.get("labelpad", 5)
|
||
|
|
self.label.set_pad(labelpad)
|
||
|
|
|
||
|
|
def _update_label(self, renderer):
|
||
|
|
if not self.label.get_visible():
|
||
|
|
return
|
||
|
|
|
||
|
|
if self._ticklabel_add_angle != self._axislabel_add_angle:
|
||
|
|
if ((self.major_ticks.get_visible()
|
||
|
|
and not self.major_ticks.get_tick_out())
|
||
|
|
or (self.minor_ticks.get_visible()
|
||
|
|
and not self.major_ticks.get_tick_out())):
|
||
|
|
axislabel_pad = self.major_ticks._ticksize
|
||
|
|
else:
|
||
|
|
axislabel_pad = 0
|
||
|
|
else:
|
||
|
|
axislabel_pad = max(self.major_ticklabels._axislabel_pad,
|
||
|
|
self.minor_ticklabels._axislabel_pad)
|
||
|
|
|
||
|
|
self.label._set_external_pad(axislabel_pad)
|
||
|
|
|
||
|
|
xy, angle_tangent = \
|
||
|
|
self._axis_artist_helper.get_axislabel_pos_angle(self.axes)
|
||
|
|
if xy is None:
|
||
|
|
return
|
||
|
|
|
||
|
|
angle_label = angle_tangent - 90
|
||
|
|
|
||
|
|
x, y = xy
|
||
|
|
self.label._set_ref_angle(angle_label+self._axislabel_add_angle)
|
||
|
|
self.label.set(x=x, y=y)
|
||
|
|
|
||
|
|
def _draw_label(self, renderer):
|
||
|
|
self._update_label(renderer)
|
||
|
|
self.label.draw(renderer)
|
||
|
|
|
||
|
|
def set_label(self, s):
|
||
|
|
self.label.set_text(s)
|
||
|
|
|
||
|
|
def get_tightbbox(self, renderer):
|
||
|
|
if not self.get_visible():
|
||
|
|
return
|
||
|
|
self._axis_artist_helper.update_lim(self.axes)
|
||
|
|
self._update_ticks(renderer)
|
||
|
|
self._update_label(renderer)
|
||
|
|
bb = [
|
||
|
|
*self.major_ticklabels.get_window_extents(renderer),
|
||
|
|
*self.minor_ticklabels.get_window_extents(renderer),
|
||
|
|
self.label.get_window_extent(renderer),
|
||
|
|
self.offsetText.get_window_extent(renderer),
|
||
|
|
]
|
||
|
|
bb = [b for b in bb if b and (b.width != 0 or b.height != 0)]
|
||
|
|
if bb:
|
||
|
|
_bbox = Bbox.union(bb)
|
||
|
|
return _bbox
|
||
|
|
else:
|
||
|
|
return None
|
||
|
|
|
||
|
|
@martist.allow_rasterization
|
||
|
|
def draw(self, renderer):
|
||
|
|
# docstring inherited
|
||
|
|
if not self.get_visible():
|
||
|
|
return
|
||
|
|
renderer.open_group(__name__, gid=self.get_gid())
|
||
|
|
self._axis_artist_helper.update_lim(self.axes)
|
||
|
|
self._draw_ticks(renderer)
|
||
|
|
self._draw_line(renderer)
|
||
|
|
self._draw_label(renderer)
|
||
|
|
renderer.close_group(__name__)
|
||
|
|
|
||
|
|
def toggle(self, all=None, ticks=None, ticklabels=None, label=None):
|
||
|
|
"""
|
||
|
|
Toggle visibility of ticks, ticklabels, and (axis) label.
|
||
|
|
To turn all off, ::
|
||
|
|
|
||
|
|
axis.toggle(all=False)
|
||
|
|
|
||
|
|
To turn all off but ticks on ::
|
||
|
|
|
||
|
|
axis.toggle(all=False, ticks=True)
|
||
|
|
|
||
|
|
To turn all on but (axis) label off ::
|
||
|
|
|
||
|
|
axis.toggle(all=True, label=False))
|
||
|
|
|
||
|
|
"""
|
||
|
|
if all:
|
||
|
|
_ticks, _ticklabels, _label = True, True, True
|
||
|
|
elif all is not None:
|
||
|
|
_ticks, _ticklabels, _label = False, False, False
|
||
|
|
else:
|
||
|
|
_ticks, _ticklabels, _label = None, None, None
|
||
|
|
|
||
|
|
if ticks is not None:
|
||
|
|
_ticks = ticks
|
||
|
|
if ticklabels is not None:
|
||
|
|
_ticklabels = ticklabels
|
||
|
|
if label is not None:
|
||
|
|
_label = label
|
||
|
|
|
||
|
|
if _ticks is not None:
|
||
|
|
self.major_ticks.set_visible(_ticks)
|
||
|
|
self.minor_ticks.set_visible(_ticks)
|
||
|
|
if _ticklabels is not None:
|
||
|
|
self.major_ticklabels.set_visible(_ticklabels)
|
||
|
|
self.minor_ticklabels.set_visible(_ticklabels)
|
||
|
|
if _label is not None:
|
||
|
|
self.label.set_visible(_label)
|