Note
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Polygon Selector#
Shows how to create a polygon programmatically or interactively
importmatplotlib.pyplotaspltfrommatplotlib.widgetsimportPolygonSelector
To create the polygon programmatically
fig,ax=plt.subplots()fig.show()selector=PolygonSelector(ax,lambda*args:None)# Add three verticesselector.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.")
Click on the figure to create a polygon.Press the 'esc' key to start a new polygon.Try holding the 'shift' key to move all of the vertices.Try holding the 'ctrl' key to move a single vertex.
Tags:component: axesstyling: positionplot-type: linelevel: intermediatedomain: cartographydomain: geometrydomain: statistics
References
The use of the following functions, methods, classes and modules is shownin this example: