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 code block plots four graphs and saves them in a .png format:
- Set the seed for reproducible results:
np.random.seed(19681211)
- Prepare data for a polar plot:
N = 250r = np.random.rand(N)theta = 2 * np.pi * np.random.rand(N)area = 500 * r**2colors = theta
- Define the figure with size and plot a polar chart:
plt.figure(figsize=(6,4))ax = plt.subplot(111, projection='polar')c = ax.scatter(theta, r, c=colors, s=area, cmap='plasma', alpha=0.6)plt.title('Polar Plot', color='m', size=15, weight='bold')
- Save the figure in a PNG format with transparent set to True, and display the same on the screen:
plt.savefig('polar_transparent.png', dpi=300, transparent=True)plt.show()
- Define another figure with size, prepare ...
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