October 2018
Beginner to intermediate
676 pages
18h 30m
English
Content preview from Matplotlib 3.0 Cookbook
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How to do it...
The following steps explain how to code the required logic:
- Define the figure and axes for both the main window and zoom window:
figmain, axmain = plt.subplots()figzoom, axzoom = plt.subplots()
- Set the attributes for both the main and zoom axes:
axmain.set(xlim=(-5, 5), ylim=(-75, 175), autoscale_on=False, title='Click to zoom')axzoom.set(xlim=(-2, 2), ylim=(-8, 8), autoscale_on=False, title='Zoom window')
- Prepare the data for the plots:
x = np.arange(-5, 5, 0.1)y = x ** 3
- Plot the same curve on both the main and zoom axes:
axmain.plot(x, y, 'g-d')axzoom.plot(x, y, 'b-.o')
- Define the callback function that responds to the mouse button press event:
def onbuttonpress(event): if event.button == 1: # left = 1, scroll=2, ...
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