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Switch the lasso selector to use mpl event handling, not input(). #10308

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Merged
merged 1 commit into from
Jan 23, 2018
Merged

Switch the lasso selector to use mpl event handling, not input(). #10308

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22 changes: 12 additions & 10 deletions examples/widgets/lasso_selector_demo_sgskip.py
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Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,8 @@
a lasso loop around the points on the graph. To draw, just click
on the graph, hold, and drag it around the points you need to select.
"""
from __future__ import print_function

from six.moves import input
from __future__ import print_function

import numpy as np

Expand Down Expand Up @@ -79,7 +78,6 @@ def disconnect(self):
if __name__ == '__main__':
import matplotlib.pyplot as plt

plt.ion()
# Fixing random state for reproducibility
np.random.seed(19680801)

Expand All @@ -91,11 +89,15 @@ def disconnect(self):
pts = ax.scatter(data[:, 0], data[:, 1], s=80)
selector = SelectFromCollection(ax, pts)

plt.draw()
input('Press Enter to accept selected points')
print("Selected points:")
print(selector.xys[selector.ind])
selector.disconnect()
def accept(event):
if event.key == "enter":
print("Selected points:")
print(selector.xys[selector.ind])
selector.disconnect()
ax.set_title("")
fig.canvas.draw()

fig.canvas.mpl_connect("key_press_event", accept)
ax.set_title("Press enter to accept selected points.")

# Block end of script so you can check that the lasso is disconnected.
input('Press Enter to quit')
plt.show()