def get_renderer(self, cleared=None):
# Mirrors super.get_renderer, but caches the old one
# so that we can do things such as produce a diff image
# in get_diff_image
_, _, w, h = self.figure.bbox.bounds
w, h = int(w), int(h)
key = w, h, self.figure.dpi
try:
self._lastKey, self._renderer
except AttributeError:
need_new_renderer = True
else:
need_new_renderer = (self._lastKey != key)
if need_new_renderer:
self._renderer = backend_agg.RendererAgg(
w, h, self.figure.dpi)
self._last_renderer = backend_agg.RendererAgg(
w, h, self.figure.dpi)
self._lastKey = key
elif cleared:
self._renderer.clear()
return self._renderer
def get_renderer(self, cleared=None):
# Mirrors super.get_renderer, but caches the old one so that we can do
# things such as produce a diff image in get_diff_image.
w, h = self.figure.bbox.size.astype(int)
key = w, h, self.figure.dpi
try:
self._lastKey, self._renderer
except AttributeError:
need_new_renderer = True
else:
need_new_renderer = (self._lastKey != key)
if need_new_renderer:
self._renderer = backend_agg.RendererAgg(w, h, self.figure.dpi)
self._lastKey = key
self._last_buff = np.copy(
np.frombuffer(self._renderer.buffer_rgba(),
dtype=np.uint32).reshape((self._renderer.height,
self._renderer.width)))
elif cleared:
self._renderer.clear()
return self._renderer
def _get_location_from_best(obj):
# Create a renderer
from matplotlib.backends import backend_agg
renderer = backend_agg.RendererAgg(
width=obj.figure.get_figwidth(),
height=obj.figure.get_figheight(),
dpi=obj.figure.dpi,
)
# Rectangles of the legend and of the axes
# Lower left and upper right points
x0_legend, x1_legend = obj._legend_box.get_window_extent(
renderer).get_points()
x0_axes, x1_axes = obj.axes.get_window_extent(renderer).get_points()
dimension_legend = x1_legend - x0_legend
dimension_axes = x1_axes - x0_axes
# To determine the actual position of the legend, check which corner
# (or center) of the legend is closest to the corresponding corner
# (or center) of the axes box.
# 1. Key points of the legend
lower_left_legend = x0_legend
lower_right_legend = numpy.array([x1_legend[0], x0_legend[1]],
dtype=numpy.float_)
upper_left_legend = numpy.array([x0_legend[0], x1_legend[1]],
dtype=numpy.float_)
upper_right_legend = x1_legend
center_legend = x0_legend + dimension_legend / 2.0
center_left_legend = numpy.array(
[x0_legend[0], x0_legend[1] + dimension_legend[1] / 2.0],
dtype=numpy.float_)
center_right_legend = numpy.array(
[x1_legend[0], x0_legend[1] + dimension_legend[1] / 2.0],
dtype=numpy.float_)
lower_center_legend = numpy.array(
[x0_legend[0] + dimension_legend[0] / 2.0, x0_legend[1]],
dtype=numpy.float_)
upper_center_legend = numpy.array(
[x0_legend[0] + dimension_legend[0] / 2.0, x1_legend[1]],
dtype=numpy.float_)
# 2. Key points of the axes
lower_left_axes = x0_axes
lower_right_axes = numpy.array([x1_axes[0], x0_axes[1]],
dtype=numpy.float_)
upper_left_axes = numpy.array([x0_axes[0], x1_axes[1]], dtype=numpy.float_)
upper_right_axes = x1_axes
center_axes = x0_axes + dimension_axes / 2.0
center_left_axes = numpy.array(
[x0_axes[0], x0_axes[1] + dimension_axes[1] / 2.0], dtype=numpy.float_)
center_right_axes = numpy.array(
[x1_axes[0], x0_axes[1] + dimension_axes[1] / 2.0], dtype=numpy.float_)
lower_center_axes = numpy.array(
[x0_axes[0] + dimension_axes[0] / 2.0, x0_axes[1]], dtype=numpy.float_)
upper_center_axes = numpy.array(
[x0_axes[0] + dimension_axes[0] / 2.0, x1_axes[1]], dtype=numpy.float_)
# 3. Compute the distances between comparable points.
distances = {
1: upper_right_axes - upper_right_legend, # upper right
2: upper_left_axes - upper_left_legend, # upper left
3: lower_left_axes - lower_left_legend, # lower left
4: lower_right_axes - lower_right_legend, # lower right
# 5:, Not Implemented # right
6: center_left_axes - center_left_legend, # center left
7: center_right_axes - center_right_legend, # center right
8: lower_center_axes - lower_center_legend, # lower center
9: upper_center_axes - upper_center_legend, # upper center
10: center_axes - center_legend, # center
}
for k, v in distances.items():
distances[k] = numpy.linalg.norm(v, ord=2)
# 4. Take the shortest distance between key points as the final
# location
return min(distances, key=distances.get)
def draw_legend(data, obj):
'''Adds legend code.
'''
texts = []
childrenAlignment = []
for text in obj.texts:
texts.append('%s' % text.get_text())
childrenAlignment.append('%s' % text.get_horizontalalignment())
cont = 'legend entries={{%s}}' % '},{'.join(texts)
data['extra axis options'].add(cont)
# Get the location.
# http://matplotlib.org/api/legend_api.html
pad = 0.03
loc = obj._loc
if loc == 0:
# best
# Create a renderer
from matplotlib.backends import backend_agg
renderer = backend_agg.RendererAgg(width=obj.figure.get_figwidth(),
height=obj.figure.get_figheight(),
dpi=obj.figure.dpi)
# Rectangles of the legend and of the axes
# Lower left and upper right points
x0_legend, x1_legend = obj._legend_box \
.get_window_extent(renderer).get_points()
x0_axes, x1_axes = obj.axes.get_window_extent(renderer).get_points()
dimension_legend = x1_legend - x0_legend
dimension_axes = x1_axes - x0_axes
# To determine the actual position of the legend, check which corner
# (or center) of the legend is closest to the corresponding corner
# (or center) of the axes box.
# 1. Key points of the legend
lower_left_legend = x0_legend
lower_right_legend = numpy.array([x1_legend[0], x0_legend[1]],
dtype=numpy.float_)
upper_left_legend = numpy.array([x0_legend[0], x1_legend[1]],
dtype=numpy.float_)
upper_right_legend = x1_legend
center_legend = x0_legend + dimension_legend / 2.
center_left_legend = numpy.array(
[x0_legend[0], x0_legend[1] + dimension_legend[1] / 2.],
dtype=numpy.float_)
center_right_legend = numpy.array(
[x1_legend[0], x0_legend[1] + dimension_legend[1] / 2.],
dtype=numpy.float_)
lower_center_legend = numpy.array(
[x0_legend[0] + dimension_legend[0] / 2., x0_legend[1]],
dtype=numpy.float_)
upper_center_legend = numpy.array(
[x0_legend[0] + dimension_legend[0] / 2., x1_legend[1]],
dtype=numpy.float_)
# 2. Key points of the axes
lower_left_axes = x0_axes
lower_right_axes = numpy.array([x1_axes[0], x0_axes[1]],
dtype=numpy.float_)
upper_left_axes = numpy.array([x0_axes[0], x1_axes[1]],
dtype=numpy.float_)
upper_right_axes = x1_axes
center_axes = x0_axes + dimension_axes / 2.
center_left_axes = numpy.array(
[x0_axes[0], x0_axes[1] + dimension_axes[1] / 2.],
dtype=numpy.float_)
center_right_axes = numpy.array(
[x1_axes[0], x0_axes[1] + dimension_axes[1] / 2.],
dtype=numpy.float_)
lower_center_axes = numpy.array(
[x0_axes[0] + dimension_axes[0] / 2., x0_axes[1]],
dtype=numpy.float_)
upper_center_axes = numpy.array(
[x0_axes[0] + dimension_axes[0] / 2., x1_axes[1]],
dtype=numpy.float_)
# 3. Compute the distances between comparable points.
distances = {
1: upper_right_axes - upper_right_legend, # upper right
2: upper_left_axes - upper_left_legend, # upper left
3: lower_left_axes - lower_left_legend, # lower left
4: lower_right_axes - lower_right_legend, # lower right
# 5:, Not Implemented # right
6: center_left_axes - center_left_legend, # center left
7: center_right_axes - center_right_legend, # center right
8: lower_center_axes - lower_center_legend, # lower center
9: upper_center_axes - upper_center_legend, # upper center
10: center_axes - center_legend # center
}
for k, v in distances.items():
distances[k] = numpy.linalg.norm(v, ord=2)
# 4. Take the shortest distance between key points as the final
# location
loc = min(distances, key=distances.get)
if loc == 1:
# upper right
position = None
anchor = None
elif loc == 2:
# upper left
position = [pad, 1.0 - pad]
anchor = 'north west'
elif loc == 3:
# lower left
position = [pad, pad]
anchor = 'south west'
elif loc == 4:
# lower right
position = [1.0 - pad, pad]
anchor = 'south east'
elif loc == 5:
# right
position = [1.0 - pad, 0.5]
anchor = 'east'
elif loc == 6:
# center left
position = [3 * pad, 0.5]
anchor = 'west'
elif loc == 7:
# center right
position = [1.0 - 3 * pad, 0.5]
anchor = 'east'
elif loc == 8:
# lower center
position = [0.5, 3 * pad]
anchor = 'south'
elif loc == 9:
# upper center
position = [0.5, 1.0 - 3 * pad]
anchor = 'north'
else:
assert loc == 10
# center
position = [0.5, 0.5]
anchor = 'center'
legend_style = []
if position:
legend_style.append('at={(%.15g,%.15g)}' % (position[0], position[1]))
if anchor:
legend_style.append('anchor=%s' % anchor)
# Get the edgecolor of the box
if obj.get_frame_on():
edgecolor = obj.get_frame().get_edgecolor()
data, frame_xcolor, _ = mycol.mpl_color2xcolor(data, edgecolor)
if frame_xcolor != 'black': # black is default
legend_style.append('draw=%s' % frame_xcolor)
else:
legend_style.append('draw=none')
# Get the facecolor of the box
facecolor = obj.get_frame().get_facecolor()
data, fill_xcolor, _ = mycol.mpl_color2xcolor(data, facecolor)
if fill_xcolor != 'white': # white is default
legend_style.append('fill=%s' % fill_xcolor)
# Get the horizontal alignment
if len(childrenAlignment) > 0:
alignment = childrenAlignment[0]
else:
alignment = None
for childAlignment in childrenAlignment:
if alignment != childAlignment:
warnings.warn(
'Varying horizontal alignments in the legend. Using default.')
alignment = None
break
# Write styles to data
if legend_style:
style = 'legend style={%s}' % ', '.join(legend_style)
data['extra axis options'].add(style)
if childAlignment:
cellAlign = 'legend cell align={%s}' % alignment
data['extra axis options'].add(cellAlign)
return data
def draw_legend(data, obj):
'''Adds legend code.
'''
texts = []
children_alignment = []
for text in obj.texts:
texts.append('%s' % text.get_text())
children_alignment.append('%s' % text.get_horizontalalignment())
cont = 'legend entries={{%s}}' % '},{'.join(texts)
data['extra axis options'].add(cont)
# Get the location.
# http://matplotlib.org/api/legend_api.html
pad = 0.03
# pylint: disable=protected-access
loc = obj._loc
if loc == 0:
# best
# Create a renderer
from matplotlib.backends import backend_agg
renderer = backend_agg.RendererAgg(width=obj.figure.get_figwidth(),
height=obj.figure.get_figheight(),
dpi=obj.figure.dpi)
# Rectangles of the legend and of the axes
# Lower left and upper right points
# pylint: disable=protected-access
x0_legend, x1_legend = \
obj._legend_box.get_window_extent(renderer).get_points()
x0_axes, x1_axes = obj.axes.get_window_extent(renderer).get_points()
dimension_legend = x1_legend - x0_legend
dimension_axes = x1_axes - x0_axes
# To determine the actual position of the legend, check which corner
# (or center) of the legend is closest to the corresponding corner
# (or center) of the axes box.
# 1. Key points of the legend
lower_left_legend = x0_legend
lower_right_legend = numpy.array([x1_legend[0], x0_legend[1]],
dtype=numpy.float_)
upper_left_legend = numpy.array([x0_legend[0], x1_legend[1]],
dtype=numpy.float_)
upper_right_legend = x1_legend
center_legend = x0_legend + dimension_legend / 2.
center_left_legend = numpy.array(
[x0_legend[0], x0_legend[1] + dimension_legend[1] / 2.],
dtype=numpy.float_)
center_right_legend = numpy.array(
[x1_legend[0], x0_legend[1] + dimension_legend[1] / 2.],
dtype=numpy.float_)
lower_center_legend = numpy.array(
[x0_legend[0] + dimension_legend[0] / 2., x0_legend[1]],
dtype=numpy.float_)
upper_center_legend = numpy.array(
[x0_legend[0] + dimension_legend[0] / 2., x1_legend[1]],
dtype=numpy.float_)
# 2. Key points of the axes
lower_left_axes = x0_axes
lower_right_axes = numpy.array([x1_axes[0], x0_axes[1]],
dtype=numpy.float_)
upper_left_axes = numpy.array([x0_axes[0], x1_axes[1]],
dtype=numpy.float_)
upper_right_axes = x1_axes
center_axes = x0_axes + dimension_axes / 2.
center_left_axes = numpy.array(
[x0_axes[0], x0_axes[1] + dimension_axes[1] / 2.],
dtype=numpy.float_)
center_right_axes = numpy.array(
[x1_axes[0], x0_axes[1] + dimension_axes[1] / 2.],
dtype=numpy.float_)
lower_center_axes = numpy.array(
[x0_axes[0] + dimension_axes[0] / 2., x0_axes[1]],
dtype=numpy.float_)
upper_center_axes = numpy.array(
[x0_axes[0] + dimension_axes[0] / 2., x1_axes[1]],
dtype=numpy.float_)
# 3. Compute the distances between comparable points.
distances = {
1: upper_right_axes - upper_right_legend, # upper right
2: upper_left_axes - upper_left_legend, # upper left
3: lower_left_axes - lower_left_legend, # lower left
4: lower_right_axes - lower_right_legend, # lower right
# 5:, Not Implemented # right
6: center_left_axes - center_left_legend, # center left
7: center_right_axes - center_right_legend, # center right
8: lower_center_axes - lower_center_legend, # lower center
9: upper_center_axes - upper_center_legend, # upper center
10: center_axes - center_legend # center
}
for k, v in distances.items():
distances[k] = numpy.linalg.norm(v, ord=2)
# 4. Take the shortest distance between key points as the final
# location
loc = min(distances, key=distances.get)
if loc == 1:
# upper right
position = None
anchor = None
elif loc == 2:
# upper left
position = [pad, 1.0 - pad]
anchor = 'north west'
elif loc == 3:
# lower left
position = [pad, pad]
anchor = 'south west'
elif loc == 4:
# lower right
position = [1.0 - pad, pad]
anchor = 'south east'
elif loc == 5:
# right
position = [1.0 - pad, 0.5]
anchor = 'east'
elif loc == 6:
# center left
position = [3 * pad, 0.5]
anchor = 'west'
elif loc == 7:
# center right
position = [1.0 - 3 * pad, 0.5]
anchor = 'east'
elif loc == 8:
# lower center
position = [0.5, 3 * pad]
anchor = 'south'
elif loc == 9:
# upper center
position = [0.5, 1.0 - 3 * pad]
anchor = 'north'
else:
assert loc == 10
# center
position = [0.5, 0.5]
anchor = 'center'
# In case of given position via bbox_to_anchor parameter the center
# of legend is changed as follows:
if obj._bbox_to_anchor:
bbox_center = obj.get_bbox_to_anchor()._bbox._points[1]
position = [bbox_center[0], bbox_center[1]]
legend_style = []
if position:
legend_style.append('at={(%.15g,%.15g)}' % (position[0], position[1]))
if anchor:
legend_style.append('anchor=%s' % anchor)
# Get the edgecolor of the box
if obj.get_frame_on():
edgecolor = obj.get_frame().get_edgecolor()
data, frame_xcolor, _ = mycol.mpl_color2xcolor(data, edgecolor)
if frame_xcolor != 'black': # black is default
legend_style.append('draw=%s' % frame_xcolor)
else:
legend_style.append('draw=none')
# Get the facecolor of the box
facecolor = obj.get_frame().get_facecolor()
data, fill_xcolor, _ = mycol.mpl_color2xcolor(data, facecolor)
if fill_xcolor != 'white': # white is default
legend_style.append('fill=%s' % fill_xcolor)
# Get the horizontal alignment
try:
alignment = children_alignment[0]
except IndexError:
alignment = None
for child_alignment in children_alignment:
if alignment != child_alignment:
warnings.warn(
'Varying horizontal alignments in the legend. Using default.')
alignment = None
break
if alignment and 'legend cell align' not in data['discard axis options']:
data['extra axis options'].add(
'legend cell align={{{}}}'.format(alignment))
if obj._ncol != 1 and 'legend columns' not in data['discard axis options']:
data['extra axis options'].add('legend columns={}'.format(obj._ncol))
# Set color of lines in legend
if not data['addplot_inherit_global_parameters']:
for handle in obj.legendHandles:
try:
data, legend_color, _ = mycol.mpl_color2xcolor(
data, handle.get_color())
data['legend colors'].append(
'\\addlegendimage{no markers, %s}\n' % legend_color)
except AttributeError:
pass
# Write styles to data
if legend_style and 'legend style' not in data['discard axis options']:
style = 'legend style={%s}' % ', '.join(legend_style)
data['extra axis options'].add(style)
return data