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pylab_examples example code: ellipse_collection.py¶

(Source code, png)

../../_images/ellipse_collection.png

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.collections import EllipseCollection

x = np.arange(10)
y = np.arange(15)
X, Y = np.meshgrid(x, y)

XY = np.hstack((X.ravel()[:, np.newaxis], Y.ravel()[:, np.newaxis]))

ww = X/10.0
hh = Y/15.0
aa = X*9


fig, ax = plt.subplots()

ec = EllipseCollection(ww, hh, aa, units='x', offsets=XY,
                       transOffset=ax.transData)
ec.set_array((X + Y).ravel())
ax.add_collection(ec)
ax.autoscale_view()
ax.set_xlabel('X')
ax.set_ylabel('y')
cbar = plt.colorbar(ec)
cbar.set_label('X+Y')
plt.show()

Keywords: python, matplotlib, pylab, example, codex (see Search examples)