757 lines
25 KiB
Python
757 lines
25 KiB
Python
"""
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Helper classes to adjust the positions of multiple axes at drawing time.
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"""
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import numpy as np
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from matplotlib import cbook
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from matplotlib.axes import SubplotBase
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from matplotlib.gridspec import SubplotSpec, GridSpec
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import matplotlib.transforms as mtransforms
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from . import axes_size as Size
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class Divider:
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"""
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An Axes positioning class.
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The divider is initialized with lists of horizontal and vertical sizes
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(:mod:`mpl_toolkits.axes_grid1.axes_size`) based on which a given
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rectangular area will be divided.
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The `new_locator` method then creates a callable object
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that can be used as the *axes_locator* of the axes.
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"""
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def __init__(self, fig, pos, horizontal, vertical,
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aspect=None, anchor="C"):
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"""
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Parameters
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----------
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fig : Figure
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pos : tuple of 4 floats
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Position of the rectangle that will be divided.
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horizontal : list of :mod:`~mpl_toolkits.axes_grid1.axes_size`
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Sizes for horizontal division.
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vertical : list of :mod:`~mpl_toolkits.axes_grid1.axes_size`
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Sizes for vertical division.
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aspect : bool
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Whether overall rectangular area is reduced so that the relative
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part of the horizontal and vertical scales have the same scale.
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anchor : {'C', 'SW', 'S', 'SE', 'E', 'NE', 'N', 'NW', 'W'}
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Placement of the reduced rectangle, when *aspect* is True.
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"""
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self._fig = fig
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self._pos = pos
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self._horizontal = horizontal
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self._vertical = vertical
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self._anchor = anchor
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self._aspect = aspect
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self._xrefindex = 0
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self._yrefindex = 0
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self._locator = None
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def get_horizontal_sizes(self, renderer):
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return [s.get_size(renderer) for s in self.get_horizontal()]
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def get_vertical_sizes(self, renderer):
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return [s.get_size(renderer) for s in self.get_vertical()]
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def get_vsize_hsize(self):
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vsize = Size.AddList(self.get_vertical())
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hsize = Size.AddList(self.get_horizontal())
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return vsize, hsize
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@staticmethod
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def _calc_k(l, total_size):
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rs_sum, as_sum = 0., 0.
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for _rs, _as in l:
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rs_sum += _rs
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as_sum += _as
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if rs_sum != 0.:
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k = (total_size - as_sum) / rs_sum
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return k
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else:
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return 0.
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@staticmethod
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def _calc_offsets(l, k):
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offsets = [0.]
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for _rs, _as in l:
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offsets.append(offsets[-1] + _rs*k + _as)
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return offsets
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def set_position(self, pos):
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"""
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Set the position of the rectangle.
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Parameters
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----------
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pos : tuple of 4 floats
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position of the rectangle that will be divided
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"""
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self._pos = pos
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def get_position(self):
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"""Return the position of the rectangle."""
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return self._pos
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def set_anchor(self, anchor):
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"""
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Parameters
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----------
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anchor : {'C', 'SW', 'S', 'SE', 'E', 'NE', 'N', 'NW', 'W'}
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anchor position
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===== ============
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value description
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===== ============
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'C' Center
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'SW' bottom left
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'S' bottom
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'SE' bottom right
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'E' right
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'NE' top right
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'N' top
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'NW' top left
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'W' left
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===== ============
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"""
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if len(anchor) != 2:
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cbook._check_in_list(mtransforms.Bbox.coefs, anchor=anchor)
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self._anchor = anchor
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def get_anchor(self):
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"""Return the anchor."""
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return self._anchor
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def set_horizontal(self, h):
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"""
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Parameters
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----------
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h : list of :mod:`~mpl_toolkits.axes_grid1.axes_size`
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sizes for horizontal division
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"""
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self._horizontal = h
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def get_horizontal(self):
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"""Return horizontal sizes."""
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return self._horizontal
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def set_vertical(self, v):
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"""
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Parameters
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----------
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v : list of :mod:`~mpl_toolkits.axes_grid1.axes_size`
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sizes for vertical division
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"""
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self._vertical = v
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def get_vertical(self):
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"""Return vertical sizes."""
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return self._vertical
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def set_aspect(self, aspect=False):
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"""
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Parameters
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----------
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aspect : bool
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"""
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self._aspect = aspect
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def get_aspect(self):
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"""Return aspect."""
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return self._aspect
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def set_locator(self, _locator):
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self._locator = _locator
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def get_locator(self):
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return self._locator
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def get_position_runtime(self, ax, renderer):
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if self._locator is None:
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return self.get_position()
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else:
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return self._locator(ax, renderer).bounds
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def locate(self, nx, ny, nx1=None, ny1=None, axes=None, renderer=None):
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"""
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Parameters
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----------
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nx, nx1 : int
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Integers specifying the column-position of the
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cell. When *nx1* is None, a single *nx*-th column is
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specified. Otherwise location of columns spanning between *nx*
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to *nx1* (but excluding *nx1*-th column) is specified.
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ny, ny1 : int
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Same as *nx* and *nx1*, but for row positions.
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axes
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renderer
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"""
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figW, figH = self._fig.get_size_inches()
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x, y, w, h = self.get_position_runtime(axes, renderer)
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hsizes = self.get_horizontal_sizes(renderer)
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vsizes = self.get_vertical_sizes(renderer)
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k_h = self._calc_k(hsizes, figW*w)
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k_v = self._calc_k(vsizes, figH*h)
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if self.get_aspect():
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k = min(k_h, k_v)
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ox = self._calc_offsets(hsizes, k)
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oy = self._calc_offsets(vsizes, k)
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ww = (ox[-1] - ox[0]) / figW
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hh = (oy[-1] - oy[0]) / figH
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pb = mtransforms.Bbox.from_bounds(x, y, w, h)
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pb1 = mtransforms.Bbox.from_bounds(x, y, ww, hh)
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pb1_anchored = pb1.anchored(self.get_anchor(), pb)
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x0, y0 = pb1_anchored.x0, pb1_anchored.y0
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else:
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ox = self._calc_offsets(hsizes, k_h)
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oy = self._calc_offsets(vsizes, k_v)
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x0, y0 = x, y
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if nx1 is None:
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nx1 = nx + 1
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if ny1 is None:
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ny1 = ny + 1
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x1, w1 = x0 + ox[nx] / figW, (ox[nx1] - ox[nx]) / figW
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y1, h1 = y0 + oy[ny] / figH, (oy[ny1] - oy[ny]) / figH
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return mtransforms.Bbox.from_bounds(x1, y1, w1, h1)
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def new_locator(self, nx, ny, nx1=None, ny1=None):
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"""
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Return a new `AxesLocator` for the specified cell.
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Parameters
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----------
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nx, nx1 : int
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Integers specifying the column-position of the
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cell. When *nx1* is None, a single *nx*-th column is
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specified. Otherwise location of columns spanning between *nx*
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to *nx1* (but excluding *nx1*-th column) is specified.
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ny, ny1 : int
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Same as *nx* and *nx1*, but for row positions.
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"""
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return AxesLocator(self, nx, ny, nx1, ny1)
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def append_size(self, position, size):
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if position == "left":
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self._horizontal.insert(0, size)
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self._xrefindex += 1
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elif position == "right":
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self._horizontal.append(size)
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elif position == "bottom":
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self._vertical.insert(0, size)
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self._yrefindex += 1
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elif position == "top":
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self._vertical.append(size)
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else:
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cbook._check_in_list(["left", "right", "bottom", "top"],
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position=position)
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def add_auto_adjustable_area(self, use_axes, pad=0.1, adjust_dirs=None):
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if adjust_dirs is None:
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adjust_dirs = ["left", "right", "bottom", "top"]
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from .axes_size import Padded, SizeFromFunc, GetExtentHelper
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for d in adjust_dirs:
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helper = GetExtentHelper(use_axes, d)
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size = SizeFromFunc(helper)
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padded_size = Padded(size, pad) # pad in inch
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self.append_size(d, padded_size)
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class AxesLocator:
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"""
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A simple callable object, initialized with AxesDivider class,
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returns the position and size of the given cell.
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"""
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def __init__(self, axes_divider, nx, ny, nx1=None, ny1=None):
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"""
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Parameters
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----------
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axes_divider : AxesDivider
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nx, nx1 : int
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Integers specifying the column-position of the
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cell. When *nx1* is None, a single *nx*-th column is
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specified. Otherwise location of columns spanning between *nx*
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to *nx1* (but excluding *nx1*-th column) is specified.
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ny, ny1 : int
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Same as *nx* and *nx1*, but for row positions.
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"""
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self._axes_divider = axes_divider
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_xrefindex = axes_divider._xrefindex
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_yrefindex = axes_divider._yrefindex
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self._nx, self._ny = nx - _xrefindex, ny - _yrefindex
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if nx1 is None:
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nx1 = nx + 1
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if ny1 is None:
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ny1 = ny + 1
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self._nx1 = nx1 - _xrefindex
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self._ny1 = ny1 - _yrefindex
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def __call__(self, axes, renderer):
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_xrefindex = self._axes_divider._xrefindex
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_yrefindex = self._axes_divider._yrefindex
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return self._axes_divider.locate(self._nx + _xrefindex,
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self._ny + _yrefindex,
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self._nx1 + _xrefindex,
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self._ny1 + _yrefindex,
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axes,
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renderer)
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def get_subplotspec(self):
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if hasattr(self._axes_divider, "get_subplotspec"):
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return self._axes_divider.get_subplotspec()
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else:
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return None
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class SubplotDivider(Divider):
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"""
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The Divider class whose rectangle area is specified as a subplot geometry.
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"""
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def __init__(self, fig, *args, horizontal=None, vertical=None,
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aspect=None, anchor='C'):
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"""
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Parameters
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----------
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fig : `matplotlib.figure.Figure`
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*args : tuple (*nrows*, *ncols*, *index*) or int
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The array of subplots in the figure has dimensions ``(nrows,
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ncols)``, and *index* is the index of the subplot being created.
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*index* starts at 1 in the upper left corner and increases to the
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right.
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If *nrows*, *ncols*, and *index* are all single digit numbers, then
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*args* can be passed as a single 3-digit number (e.g. 234 for
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(2, 3, 4)).
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"""
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self.figure = fig
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self._subplotspec = SubplotSpec._from_subplot_args(fig, args)
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self.update_params() # sets self.figbox
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Divider.__init__(self, fig, pos=self.figbox.bounds,
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horizontal=horizontal or [], vertical=vertical or [],
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aspect=aspect, anchor=anchor)
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def get_position(self):
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"""Return the bounds of the subplot box."""
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self.update_params() # update self.figbox
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return self.figbox.bounds
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def update_params(self):
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"""Update the subplot position from fig.subplotpars."""
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self.figbox = self.get_subplotspec().get_position(self.figure)
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def get_geometry(self):
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"""Get the subplot geometry, e.g., (2, 2, 3)."""
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rows, cols, num1, num2 = self.get_subplotspec().get_geometry()
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return rows, cols, num1 + 1 # for compatibility
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# COVERAGE NOTE: Never used internally or from examples
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def change_geometry(self, numrows, numcols, num):
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"""Change subplot geometry, e.g., from (1, 1, 1) to (2, 2, 3)."""
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self._subplotspec = GridSpec(numrows, numcols)[num-1]
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self.update_params()
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self.set_position(self.figbox)
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def get_subplotspec(self):
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"""Get the SubplotSpec instance."""
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return self._subplotspec
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def set_subplotspec(self, subplotspec):
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"""Set the SubplotSpec instance."""
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self._subplotspec = subplotspec
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class AxesDivider(Divider):
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"""
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Divider based on the pre-existing axes.
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"""
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def __init__(self, axes, xref=None, yref=None):
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"""
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Parameters
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----------
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axes : :class:`~matplotlib.axes.Axes`
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xref
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yref
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"""
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self._axes = axes
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if xref is None:
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self._xref = Size.AxesX(axes)
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else:
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self._xref = xref
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if yref is None:
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self._yref = Size.AxesY(axes)
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else:
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self._yref = yref
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Divider.__init__(self, fig=axes.get_figure(), pos=None,
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horizontal=[self._xref], vertical=[self._yref],
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aspect=None, anchor="C")
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def _get_new_axes(self, *, axes_class=None, **kwargs):
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axes = self._axes
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if axes_class is None:
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if isinstance(axes, SubplotBase):
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axes_class = axes._axes_class
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else:
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axes_class = type(axes)
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return axes_class(axes.get_figure(), axes.get_position(original=True),
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**kwargs)
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def new_horizontal(self, size, pad=None, pack_start=False, **kwargs):
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"""
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Add a new axes on the right (or left) side of the main axes.
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Parameters
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----------
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size : :mod:`~mpl_toolkits.axes_grid1.axes_size` or float or str
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A width of the axes. If float or string is given, *from_any*
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function is used to create the size, with *ref_size* set to AxesX
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instance of the current axes.
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pad : :mod:`~mpl_toolkits.axes_grid1.axes_size` or float or str
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Pad between the axes. It takes same argument as *size*.
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pack_start : bool
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If False, the new axes is appended at the end
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of the list, i.e., it became the right-most axes. If True, it is
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inserted at the start of the list, and becomes the left-most axes.
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**kwargs
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All extra keywords arguments are passed to the created axes.
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If *axes_class* is given, the new axes will be created as an
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instance of the given class. Otherwise, the same class of the
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main axes will be used.
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"""
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if pad is None:
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cbook.warn_deprecated(
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"3.2", message="In a future version, 'pad' will default to "
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"rcParams['figure.subplot.wspace']. Set pad=0 to keep the "
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"old behavior.")
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if pad:
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if not isinstance(pad, Size._Base):
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pad = Size.from_any(pad, fraction_ref=self._xref)
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if pack_start:
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self._horizontal.insert(0, pad)
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self._xrefindex += 1
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else:
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self._horizontal.append(pad)
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if not isinstance(size, Size._Base):
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size = Size.from_any(size, fraction_ref=self._xref)
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if pack_start:
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self._horizontal.insert(0, size)
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self._xrefindex += 1
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locator = self.new_locator(nx=0, ny=self._yrefindex)
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else:
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self._horizontal.append(size)
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locator = self.new_locator(
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nx=len(self._horizontal) - 1, ny=self._yrefindex)
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ax = self._get_new_axes(**kwargs)
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ax.set_axes_locator(locator)
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return ax
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def new_vertical(self, size, pad=None, pack_start=False, **kwargs):
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"""
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Add a new axes on the top (or bottom) side of the main axes.
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Parameters
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----------
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size : :mod:`~mpl_toolkits.axes_grid1.axes_size` or float or str
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A height of the axes. If float or string is given, *from_any*
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function is used to create the size, with *ref_size* set to AxesX
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instance of the current axes.
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pad : :mod:`~mpl_toolkits.axes_grid1.axes_size` or float or str
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Pad between the axes. It takes same argument as *size*.
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pack_start : bool
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If False, the new axes is appended at the end
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of the list, i.e., it became the right-most axes. If True, it is
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inserted at the start of the list, and becomes the left-most axes.
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**kwargs
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All extra keywords arguments are passed to the created axes.
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If *axes_class* is given, the new axes will be created as an
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instance of the given class. Otherwise, the same class of the
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main axes will be used.
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"""
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if pad is None:
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cbook.warn_deprecated(
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"3.2", message="In a future version, 'pad' will default to "
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"rcParams['figure.subplot.hspace']. Set pad=0 to keep the "
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"old behavior.")
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if pad:
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if not isinstance(pad, Size._Base):
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pad = Size.from_any(pad, fraction_ref=self._yref)
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if pack_start:
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self._vertical.insert(0, pad)
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self._yrefindex += 1
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else:
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self._vertical.append(pad)
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if not isinstance(size, Size._Base):
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size = Size.from_any(size, fraction_ref=self._yref)
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if pack_start:
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self._vertical.insert(0, size)
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self._yrefindex += 1
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locator = self.new_locator(nx=self._xrefindex, ny=0)
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else:
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self._vertical.append(size)
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locator = self.new_locator(
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nx=self._xrefindex, ny=len(self._vertical)-1)
|
|
ax = self._get_new_axes(**kwargs)
|
|
ax.set_axes_locator(locator)
|
|
return ax
|
|
|
|
def append_axes(self, position, size, pad=None, add_to_figure=True,
|
|
**kwargs):
|
|
"""
|
|
Create an axes at the given *position* with the same height
|
|
(or width) of the main axes.
|
|
|
|
*position*
|
|
["left"|"right"|"bottom"|"top"]
|
|
|
|
*size* and *pad* should be axes_grid.axes_size compatible.
|
|
"""
|
|
if position == "left":
|
|
ax = self.new_horizontal(size, pad, pack_start=True, **kwargs)
|
|
elif position == "right":
|
|
ax = self.new_horizontal(size, pad, pack_start=False, **kwargs)
|
|
elif position == "bottom":
|
|
ax = self.new_vertical(size, pad, pack_start=True, **kwargs)
|
|
elif position == "top":
|
|
ax = self.new_vertical(size, pad, pack_start=False, **kwargs)
|
|
else:
|
|
cbook._check_in_list(["left", "right", "bottom", "top"],
|
|
position=position)
|
|
if add_to_figure:
|
|
self._fig.add_axes(ax)
|
|
return ax
|
|
|
|
def get_aspect(self):
|
|
if self._aspect is None:
|
|
aspect = self._axes.get_aspect()
|
|
if aspect == "auto":
|
|
return False
|
|
else:
|
|
return True
|
|
else:
|
|
return self._aspect
|
|
|
|
def get_position(self):
|
|
if self._pos is None:
|
|
bbox = self._axes.get_position(original=True)
|
|
return bbox.bounds
|
|
else:
|
|
return self._pos
|
|
|
|
def get_anchor(self):
|
|
if self._anchor is None:
|
|
return self._axes.get_anchor()
|
|
else:
|
|
return self._anchor
|
|
|
|
def get_subplotspec(self):
|
|
if hasattr(self._axes, "get_subplotspec"):
|
|
return self._axes.get_subplotspec()
|
|
else:
|
|
return None
|
|
|
|
|
|
class HBoxDivider(SubplotDivider):
|
|
|
|
@staticmethod
|
|
def _determine_karray(equivalent_sizes, appended_sizes,
|
|
max_equivalent_size,
|
|
total_appended_size):
|
|
|
|
n = len(equivalent_sizes)
|
|
eq_rs, eq_as = np.asarray(equivalent_sizes).T
|
|
ap_rs, ap_as = np.asarray(appended_sizes).T
|
|
A = np.zeros((n + 1, n + 1))
|
|
B = np.zeros(n + 1)
|
|
np.fill_diagonal(A[:n, :n], eq_rs)
|
|
A[:n, -1] = -1
|
|
A[-1, :-1] = ap_rs
|
|
B[:n] = -eq_as
|
|
B[-1] = total_appended_size - sum(ap_as)
|
|
|
|
karray_H = np.linalg.solve(A, B) # A @ K = B
|
|
karray = karray_H[:-1]
|
|
H = karray_H[-1]
|
|
|
|
if H > max_equivalent_size:
|
|
karray = (max_equivalent_size - eq_as) / eq_rs
|
|
return karray
|
|
|
|
@staticmethod
|
|
def _calc_offsets(appended_sizes, karray):
|
|
offsets = [0.]
|
|
for (r, a), k in zip(appended_sizes, karray):
|
|
offsets.append(offsets[-1] + r*k + a)
|
|
return offsets
|
|
|
|
def new_locator(self, nx, nx1=None):
|
|
"""
|
|
Create a new `~mpl_toolkits.axes_grid.axes_divider.AxesLocator` for
|
|
the specified cell.
|
|
|
|
Parameters
|
|
----------
|
|
nx, nx1 : int
|
|
Integers specifying the column-position of the
|
|
cell. When *nx1* is None, a single *nx*-th column is
|
|
specified. Otherwise location of columns spanning between *nx*
|
|
to *nx1* (but excluding *nx1*-th column) is specified.
|
|
ny, ny1 : int
|
|
Same as *nx* and *nx1*, but for row positions.
|
|
"""
|
|
return AxesLocator(self, nx, 0, nx1, None)
|
|
|
|
def _locate(self, x, y, w, h,
|
|
y_equivalent_sizes, x_appended_sizes,
|
|
figW, figH):
|
|
equivalent_sizes = y_equivalent_sizes
|
|
appended_sizes = x_appended_sizes
|
|
|
|
max_equivalent_size = figH * h
|
|
total_appended_size = figW * w
|
|
karray = self._determine_karray(equivalent_sizes, appended_sizes,
|
|
max_equivalent_size,
|
|
total_appended_size)
|
|
|
|
ox = self._calc_offsets(appended_sizes, karray)
|
|
|
|
ww = (ox[-1] - ox[0]) / figW
|
|
ref_h = equivalent_sizes[0]
|
|
hh = (karray[0]*ref_h[0] + ref_h[1]) / figH
|
|
pb = mtransforms.Bbox.from_bounds(x, y, w, h)
|
|
pb1 = mtransforms.Bbox.from_bounds(x, y, ww, hh)
|
|
pb1_anchored = pb1.anchored(self.get_anchor(), pb)
|
|
x0, y0 = pb1_anchored.x0, pb1_anchored.y0
|
|
|
|
return x0, y0, ox, hh
|
|
|
|
def locate(self, nx, ny, nx1=None, ny1=None, axes=None, renderer=None):
|
|
"""
|
|
Parameters
|
|
----------
|
|
axes_divider : AxesDivider
|
|
nx, nx1 : int
|
|
Integers specifying the column-position of the
|
|
cell. When *nx1* is None, a single *nx*-th column is
|
|
specified. Otherwise location of columns spanning between *nx*
|
|
to *nx1* (but excluding *nx1*-th column) is specified.
|
|
ny, ny1 : int
|
|
Same as *nx* and *nx1*, but for row positions.
|
|
axes
|
|
renderer
|
|
"""
|
|
|
|
figW, figH = self._fig.get_size_inches()
|
|
x, y, w, h = self.get_position_runtime(axes, renderer)
|
|
|
|
y_equivalent_sizes = self.get_vertical_sizes(renderer)
|
|
x_appended_sizes = self.get_horizontal_sizes(renderer)
|
|
x0, y0, ox, hh = self._locate(x, y, w, h,
|
|
y_equivalent_sizes, x_appended_sizes,
|
|
figW, figH)
|
|
if nx1 is None:
|
|
nx1 = nx + 1
|
|
|
|
x1, w1 = x0 + ox[nx] / figW, (ox[nx1] - ox[nx]) / figW
|
|
y1, h1 = y0, hh
|
|
|
|
return mtransforms.Bbox.from_bounds(x1, y1, w1, h1)
|
|
|
|
|
|
class VBoxDivider(HBoxDivider):
|
|
"""
|
|
The Divider class whose rectangle area is specified as a subplot geometry.
|
|
"""
|
|
|
|
def new_locator(self, ny, ny1=None):
|
|
"""
|
|
Create a new `~mpl_toolkits.axes_grid.axes_divider.AxesLocator` for
|
|
the specified cell.
|
|
|
|
Parameters
|
|
----------
|
|
ny, ny1 : int
|
|
Integers specifying the row-position of the
|
|
cell. When *ny1* is None, a single *ny*-th row is
|
|
specified. Otherwise location of rows spanning between *ny*
|
|
to *ny1* (but excluding *ny1*-th row) is specified.
|
|
"""
|
|
return AxesLocator(self, 0, ny, None, ny1)
|
|
|
|
def locate(self, nx, ny, nx1=None, ny1=None, axes=None, renderer=None):
|
|
"""
|
|
Parameters
|
|
----------
|
|
axes_divider : AxesDivider
|
|
nx, nx1 : int
|
|
Integers specifying the column-position of the
|
|
cell. When *nx1* is None, a single *nx*-th column is
|
|
specified. Otherwise location of columns spanning between *nx*
|
|
to *nx1* (but excluding *nx1*-th column) is specified.
|
|
ny, ny1 : int
|
|
Same as *nx* and *nx1*, but for row positions.
|
|
axes
|
|
renderer
|
|
"""
|
|
|
|
figW, figH = self._fig.get_size_inches()
|
|
x, y, w, h = self.get_position_runtime(axes, renderer)
|
|
|
|
x_equivalent_sizes = self.get_horizontal_sizes(renderer)
|
|
y_appended_sizes = self.get_vertical_sizes(renderer)
|
|
|
|
y0, x0, oy, ww = self._locate(y, x, h, w,
|
|
x_equivalent_sizes, y_appended_sizes,
|
|
figH, figW)
|
|
if ny1 is None:
|
|
ny1 = ny + 1
|
|
|
|
x1, w1 = x0, ww
|
|
y1, h1 = y0 + oy[ny] / figH, (oy[ny1] - oy[ny]) / figH
|
|
|
|
return mtransforms.Bbox.from_bounds(x1, y1, w1, h1)
|
|
|
|
|
|
def make_axes_locatable(axes):
|
|
divider = AxesDivider(axes)
|
|
locator = divider.new_locator(nx=0, ny=0)
|
|
axes.set_axes_locator(locator)
|
|
|
|
return divider
|
|
|
|
|
|
def make_axes_area_auto_adjustable(ax,
|
|
use_axes=None, pad=0.1,
|
|
adjust_dirs=None):
|
|
if adjust_dirs is None:
|
|
adjust_dirs = ["left", "right", "bottom", "top"]
|
|
divider = make_axes_locatable(ax)
|
|
|
|
if use_axes is None:
|
|
use_axes = ax
|
|
|
|
divider.add_auto_adjustable_area(use_axes=use_axes, pad=pad,
|
|
adjust_dirs=adjust_dirs)
|