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 are the steps to implement the logic:
- Define and instantiate the figure:
fig = plt.figure(figsize=(8, 6), dpi=100)
- Define the axes and data for the polar plot, and plot the polar graph:
ax = fig.add_subplot(111,projection='polar')theta = np.arange(0., 2., 1./180.)*np.piax.plot(theta, 5*np.cos(4*theta))
- Define the callback function for the Slider widget:
def update(): n=n_slider.value() ax.clear() ax.plot(theta, 5*np.cos(n*theta)) fig.canvas.draw()
- Define the Slider widget:
n_slider = QtWidgets.QSlider(QtCore.Qt.Horizontal)n_slider.setRange(3, 10)n_slider.setSingleStep(1)n_slider.setValue(4)n_slider.setTickPosition(QtWidgets.QSlider.TicksBelow)n_slider.setTickInterval(1)n_slider.setFont(QtGui.QFont("Arial",30)) ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.