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# Demo of the histogram function’s different `histtype` settings

- Histogram with step curve that has a color fill.
- Histogram with custom and unequal bin widths.

Selecting different bin counts and sizes can significantly affect the shape of a histogram. The Astropy docs have a great section on how to select these parameters: http://docs.astropy.org/en/stable/visualization/histogram.html

    import numpy as np
    import matplotlib.pyplot as plt

    np.random.seed(19680801)

    mu = 200
    sigma = 25
    x = np.random.normal(mu, sigma, size=100)

    fig, (ax0, ax1) = plt.subplots(ncols=2, figsize=(8, 4))

    ax0.hist(x, 20, normed=1, histtype='stepfilled', facecolor='g', alpha=0.75)
    ax0.set_title('stepfilled')

    # Create a histogram by providing the bin edges (unequally spaced).
    bins = [100, 150, 180, 195, 205, 220, 250, 300]
    ax1.hist(x, bins, normed=1, histtype='bar', rwidth=0.8)
    ax1.set_title('unequal bins')

    fig.tight_layout()
    plt.show()

Total running time of the script: ( 0 minutes 0.081 seconds)

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