省略matplotlib图中的连接线，例如y = tan(x) [英] Omit joining lines in matplotlib plot e.g. y = tan(x)

问题描述

我有一个图y = tan(x)，我想删除垂直线(见下文).

I have the graph y = tan(x) and I want to remove the vertical lines (see below).

这是我的代码:

import numpy as np
import matplotlib.pyplot as plt

# Choose evenly spaced x intervals
x = np.arange(-2*np.pi, 2*np.pi, 0.1)

# plot y = tan(x)
plt.plot(x, np.tan(x))

# Set the range of the axes
plt.axis([-2*np.pi, 2*np.pi, -2, 2])

# Include a title
plt.title('y = tan(x)')

# Optional grid-lines
plt.grid()

# Show the graph
plt.show()

以下是图形(包括不需要的垂直线):

Here is the graph (including unwanted vertical lines):

是否可以在不对x间隔设置适当间隙的情况下删除垂直线?

Can I remove the vertical lines without setting appropriate gaps into the x intervals?

推荐答案

您可以使用

You can check the difference between successive data points using diff and then identify where the difference is negative and replace these values with NaN to create a visual break in the plotted line

# Compute the tangent for each point
y = np.tan(x)

# Insert a NaN where the difference between successive points is negative
y[:-1][np.diff(y) < 0] = np.nan

# Plot the resulting discontinuous line
plt.plot(x, y)

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