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Scatter plots with a legendΒΆ

Also demonstrates how transparency of the markers can be adjusted by giving alpha a value between 0 and 1.

import matplotlib.pyplot as plt
from numpy.random import rand

fig, ax = plt.subplots()
for color in ['red', 'green', 'blue']:
    n = 750
    x, y = rand(2, n)
    scale = 200.0 * rand(n)
    ax.scatter(x, y, c=color, s=scale, label=color,
               alpha=0.3, edgecolors='none')


Total running time of the script: ( 0 minutes 0.024 seconds)

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