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Improve fancyarrow_demo. #20430

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Merged
merged 1 commit into from
Jun 13, 2021
Merged

Improve fancyarrow_demo. #20430

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24 changes: 5 additions & 19 deletions examples/text_labels_and_annotations/fancyarrow_demo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,8 +4,8 @@
================================

Overview of the arrow styles available in `~.Axes.annotate`.

"""

import matplotlib.patches as mpatches
import matplotlib.pyplot as plt

Expand All @@ -17,27 +17,16 @@
fig = plt.figure(figsize=(4 * ncol / 1.5, figheight / 1.5))
fontsize = 0.2 * 70

ax = fig.add_axes([0, 0, 1, 1], frameon=False)
ax.set(xlim=(0, 4 * ncol), ylim=(0, figheight))

ax = fig.add_axes([0, 0, 1, 1], frameon=False, aspect=1.)

ax.set_xlim(0, 4 * ncol)
ax.set_ylim(0, figheight)


def to_texstring(s):
s = s.replace("<", r"$<$")
s = s.replace(">", r"$>$")
s = s.replace("|", r"$|$")
return s


for i, (stylename, styleclass) in enumerate(sorted(styles.items())):
for i, (stylename, styleclass) in enumerate(styles.items()):
x = 3.2 + (i // nrow) * 4
y = (figheight - 0.7 - i % nrow) # /figheight
p = mpatches.Circle((x, y), 0.2)
ax.add_patch(p)

ax.annotate(to_texstring(stylename), (x, y),
ax.annotate(stylename, (x, y),
(x - 1.2, y),
ha="right", va="center",
size=fontsize,
Expand All @@ -50,9 +39,6 @@ def to_texstring(s):
),
bbox=dict(boxstyle="square", fc="w"))

ax.xaxis.set_visible(False)
ax.yaxis.set_visible(False)

plt.show()

#############################################################################
Expand Down
44 changes: 22 additions & 22 deletions lib/matplotlib/patches.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3466,28 +3466,6 @@ def transmute(self, path, mutation_size, linewidth):

return p, False

@_register_style(_style_list, name="]-[")
class BracketAB(_Bracket):
"""An arrow with outward square brackets at both ends."""

def __init__(self,
widthA=1., lengthA=0.2, angleA=0,
widthB=1., lengthB=0.2, angleB=0):
"""
Parameters
----------
widthA, widthB : float, default: 1.0
Width of the bracket.
lengthA, lengthB : float, default: 0.2
Length of the bracket.
angleA, angleB : float, default: 0 degrees
Orientation of the bracket, as a counterclockwise angle.
0 degrees means perpendicular to the line.
"""
super().__init__(True, True,
widthA=widthA, lengthA=lengthA, angleA=angleA,
widthB=widthB, lengthB=lengthB, angleB=angleB)

@_register_style(_style_list, name="]-")
class BracketA(_Bracket):
"""An arrow with an outward square bracket at its start."""
Expand Down Expand Up @@ -3526,6 +3504,28 @@ def __init__(self, widthB=1., lengthB=0.2, angleB=None):
super().__init__(None, True,
widthB=widthB, lengthB=lengthB, angleB=angleB)

@_register_style(_style_list, name="]-[")
class BracketAB(_Bracket):
"""An arrow with outward square brackets at both ends."""

def __init__(self,
widthA=1., lengthA=0.2, angleA=0,
widthB=1., lengthB=0.2, angleB=0):
"""
Parameters
----------
widthA, widthB : float, default: 1.0
Width of the bracket.
lengthA, lengthB : float, default: 0.2
Length of the bracket.
angleA, angleB : float, default: 0 degrees
Orientation of the bracket, as a counterclockwise angle.
0 degrees means perpendicular to the line.
"""
super().__init__(True, True,
widthA=widthA, lengthA=lengthA, angleA=angleA,
widthB=widthB, lengthB=lengthB, angleB=angleB)

@_register_style(_style_list, name="|-|")
class BarAB(_Bracket):
"""An arrow with vertical bars ``|`` at both ends."""
Expand Down