8000 Add example to polygon selector docstring showing how to set vertices programmatically by ericpre · Pull Request #22170 · matplotlib/matplotlib · GitHub
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Add example to polygon selector docstring showing how to set vertices programmatically #22170

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Mar 15, 2022
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Add example to polygon selector docstring showing how to set vertices programmatically #22170

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6 changes: 3 additions & 3 deletions examples/widgets/polygon_selector_demo.py
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@@ -1,7 +1,7 @@
"""
================
Polygon Selector
================
=======================================================
Select indices from a collection using polygon selector
=======================================================

Shows how one can select indices of a polygon interactively.
"""
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46 changes: 46 additions & 0 deletions examples/widgets/polygon_selector_simple.py
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"""
================
Polygon Selector
================

Shows how to create a polygon programmatically or interactively
"""

import matplotlib.pyplot as plt
from matplotlib.widgets import PolygonSelector

###############################################################################
#
# To create the polygon programmatically
fig, ax = plt.subplots()
fig.show()

selector = PolygonSelector(ax, lambda *args: None)

# Add three vertices
selector.verts = [(0.1, 0.4), (0.5, 0.9), (0.3, 0.2)]


###############################################################################
#
# To create the polygon interactively

fig2, ax2 = plt.subplots()
fig2.show()

selector2 = PolygonSelector(ax2, lambda *args: None)

print("Click on the figure to create a polygon.")
print("Press the 'esc' key to start a new polygon.")
print("Try holding the 'shift' key to move all of the vertices.")
print("Try holding the 'ctrl' key to move a single vertex.")


#############################################################################
#
# .. admonition:: References
#
# The use of the following functions, methods, classes and modules is shown
# in this example:
#
# - `matplotlib.widgets.PolygonSelector`
1 change: 1 addition & 0 deletions lib/matplotlib/widgets.py
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Expand Up @@ -3611,6 +3611,7 @@ class PolygonSelector(_SelectorWidget):

Examples
--------
:doc:`/gallery/widgets/polygon_selector_simple`
:doc:`/gallery/widgets/polygon_selector_demo`

Notes
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0