matplotlib.lines.VertexSelector
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class matplotlib.lines.VertexSelector(line)
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Manage the callbacks to maintain a list of selected vertices for
matplotlib.lines.Line2D
. Derived classes should overrideprocess_selected()
to do something with the picks.Here is an example which highlights the selected verts with red circles:
import numpy as np import matplotlib.pyplot as plt import matplotlib.lines as lines class HighlightSelected(lines.VertexSelector): def __init__(self, line, fmt='ro', **kwargs): lines.VertexSelector.__init__(self, line) self.markers, = self.axes.plot([], [], fmt, **kwargs) def process_selected(self, ind, xs, ys): self.markers.set_data(xs, ys) self.canvas.draw() fig = plt.figure() ax = fig.add_subplot(111) x, y = np.random.rand(2, 30) line, = ax.plot(x, y, 'bs-', picker=5) selector = HighlightSelected(line) plt.show()
Initialize the class with a
matplotlib.lines.Line2D
instance. The line should already be added to somematplotlib.axes.Axes
instance and should have the picker property set.-
onpick(event)
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When the line is picked, update the set of selected indicies.
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process_selected(ind, xs, ys)
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Default “do nothing” implementation of the
process_selected()
method.ind are the indices of the selected vertices. xs and ys are the coordinates of the selected vertices.
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Licensed under the Matplotlib License Agreement.
http://matplotlib.org/2.1.0/api/_as_gen/matplotlib.lines.VertexSelector.html