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# Placing text boxes

When decorating axes with text boxes, two useful tricks are to place the text in axes coordinates (see Transformations Tutorial), so the text doesn’t move around with changes in x or y limits. You can also use the `bbox` property of text to surround the text with a `Patch` instance – the `bbox` keyword argument takes a dictionary with keys that are Patch properties.

    import numpy as np
    import matplotlib.pyplot as plt

    np.random.seed(1234)

    fig, ax = plt.subplots()
    x = 30*np.random.randn(10000)
    mu = x.mean()
    median = np.median(x)
    sigma = x.std()
    textstr = '$\mu=%.2f$\n$\mathrm{median}=%.2f$\n$\sigma=%.2f$' % (mu, median, sigma)

    ax.hist(x, 50)
    # these are matplotlib.patch.Patch properties
    props = dict(boxstyle='round', facecolor='wheat', alpha=0.5)

    # place a text box in upper left in axes coords
    ax.text(0.05, 0.95, textstr, transform=ax.transAxes, fontsize=14,
            verticalalignment='top', bbox=props)

Total running time of the script: ( 0 minutes 0.051 seconds)

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