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36 lines
858 B
Python
Executable file
36 lines
858 B
Python
Executable file
"""
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hexbin is an axes method or pyplot function that is essentially
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a pcolor of a 2-D histogram with hexagonal cells. It can be
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much more informative than a scatter plot; in the first subplot
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below, try substituting 'scatter' for 'hexbin'.
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"""
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import numpy as np
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import matplotlib.cm as cm
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import matplotlib.pyplot as plt
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n = 100000
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x = np.random.standard_normal(n)
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y = 2.0 + 3.0 * x + 4.0 * np.random.standard_normal(n)
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xmin = x.min()
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xmax = x.max()
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ymin = y.min()
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ymax = y.max()
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plt.subplots_adjust(hspace=0.5)
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plt.subplot(121)
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plt.hexbin(x,y, cmap=cm.jet)
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plt.axis([xmin, xmax, ymin, ymax])
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plt.title("Hexagon binning")
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cb = plt.colorbar()
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cb.set_label('counts')
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plt.subplot(122)
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plt.hexbin(x,y,bins='log', cmap=cm.jet)
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plt.axis([xmin, xmax, ymin, ymax])
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plt.title("With a log color scale")
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cb = plt.colorbar()
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cb.set_label('log10(N)')
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plt.show()
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