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Backport PR #13835 on branch v3.1.x (Improve Conectionstyle Demo) #13915

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Merged
merged 1 commit into from
Apr 10, 2019
Merged

Backport PR #13835 on branch v3.1.x (Improve Conectionstyle Demo) #13915

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1 change: 1 addition & 0 deletions .flake8
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Original file line number Diff line number Diff line change
Expand Up @@ -257,6 +257,7 @@ per-file-ignores =
examples/user_interfaces/mpl_with_glade3_sgskip.py: E402
examples/user_interfaces/pylab_with_gtk_sgskip.py: E302, E402
examples/user_interfaces/toolmanager_sgskip.py: E402
examples/userdemo/connectionstyle_demo.py: E402
examples/userdemo/custom_boxstyle01.py: E402
examples/userdemo/pgf_preamble_sgskip.py: E402
examples/userdemo/simple_annotate01.py: E501
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33 changes: 22 additions & 11 deletions examples/userdemo/connectionstyle_demo.py
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Expand Up @@ -3,29 +3,25 @@
Connectionstyle Demo
====================

When creating an annotation using `~.Axes.annotate`, the arrow shape can be
controlled via the *connectionstyle* parameter of *arrowprops*. For further
details see the description of `.FancyArrowPatch`.
"""

import matplotlib.pyplot as plt


fig, axs = plt.subplots(3, 5, figsize=(8, 4.8))
x1, y1 = 0.3, 0.3
x2, y2 = 0.7, 0.7


def demo_con_style(ax, connectionstyle, label=None):
def demo_con_style(ax, connectionstyle):
x1, y1 = 0.3, 0.2
x2, y2 = 0.8, 0.6

ax.plot([x1, x2], [y1, y2], ".")
ax.annotate("",
xy=(x1, y1), xycoords='data',
xytext=(x2, y2), textcoords='data',
arrowprops=dict(arrowstyle="->",
color="0.5",
arrowprops=dict(arrowstyle="->", color="0.5",
shrinkA=5, shrinkB=5,
patchA=None,
patchB=None,
patchA=None, patchB=None,
connectionstyle=connectionstyle,
),
)
Expand All @@ -34,6 +30,7 @@ def demo_con_style(ax, connectionstyle, label=None):
transform=ax.transAxes, ha="left", va="top")


fig, axs = plt.subplots(3, 5, figsize=(8, 4.8))
demo_con_style(axs[0, 0], "angle3,angleA=90,angleB=0")
demo_con_style(axs[1, 0], "angle3,angleA=0,angleB=90")
demo_con_style(axs[0, 1], "arc3,rad=0.")
Expand All @@ -51,6 +48,20 @@ def demo_con_style(ax, connectionstyle, label=None):

for ax in axs.flat:
ax.set(xlim=(0, 1), ylim=(0, 1), xticks=[], yticks=[], aspect=1)
fig.tight_layout(pad=0)
fig.tight_layout(pad=0.2)

plt.show()

#############################################################################
#
# ------------
#
# References
# """"""""""
#
# The use of the following functions, methods, classes and modules is shown
# in this example:

import matplotlib
matplotlib.axes.Axes.annotate
matplotlib.patches.FancyArrowPatch