Note
Click here to download the full example code
Step Demo¶
This example demonstrates the use of pyplot.step
for piece-wise constant
curves. In particular, it illustrates the effect of the parameter where
on the step position.
The circular markers created with pyplot.plot
show the actual data
positions so that it's easier to see the effect of where.
import numpy as np
import matplotlib.pyplot as plt
x = np.arange(14)
y = np.sin(x / 2)
plt.step(x, y + 2, label='pre (default)')
plt.plot(x, y + 2, 'o--', color='grey', alpha=0.3)
plt.step(x, y + 1, where='mid', label='mid')
plt.plot(x, y + 1, 'o--', color='grey', alpha=0.3)
plt.step(x, y, where='post', label='post')
plt.plot(x, y, 'o--', color='grey', alpha=0.3)
plt.grid(axis='x', color='0.95')
plt.legend(title='Parameter where:')
plt.title('plt.step(where=...)')
plt.show()
The same behavior can be achieved by using the drawstyle
parameter of
pyplot.plot
.
plt.plot(x, y + 2, drawstyle='steps', label='steps (=steps-pre)')
plt.plot(x, y + 2, 'o--', color='grey', alpha=0.3)
plt.plot(x, y + 1, drawstyle='steps-mid', label='steps-mid')
plt.plot(x, y + 1, 'o--', color='grey', alpha=0.3)
plt.plot(x, y, drawstyle='steps-post', label='steps-post')
plt.plot(x, y, 'o--', color='grey', alpha=0.3)
plt.grid(axis='x', color='0.95')
plt.legend(title='Parameter drawstyle:')
plt.title('plt.plot(drawstyle=...)')
plt.show()
References¶
The use of the following functions, methods, classes and modules is shown in this example:
import matplotlib
matplotlib.axes.Axes.step
matplotlib.pyplot.step
matplotlib.axes.Axes.plot
matplotlib.pyplot.plot
Out:
<function plot at 0x7f154d0cadc0>
Keywords: matplotlib code example, codex, python plot, pyplot Gallery generated by Sphinx-Gallery