Just use annotate and specify axis coordinates. For example, "upper left" would be: plt.annotate('Something', xy=(0.05, 0.95), ... ... <看更多>

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This can be done manually with the plt.text / ax.text command, which will place ... corner of the axes (here the white box), as a fraction of the axes size. ... <看更多>

Code for reproduction import matplotlib.pyplot as plt from matplotlib.widgets import TextBox fig = plt.figure() tba = fig.add_axes([.5, .5, ... ... <看更多>

import numpy as np import matplotlib.pyplot as plt data ... mark text, adding upper Y-axis tick marks and labels, adding color to the boxes, etc.) alt text. ... <看更多>