使用matplotlib更改图上特定刻度线的颜色 [英] Change color of specific ticks at plot with matplotlib

问题描述

使用matplotlib，是否可以更改轴上特定刻度的颜色?

Using matplotlib, is there an option to change the color of specific ticks on the axis?

我有一个简单的图，按天显示一些值，我需要将某些天标记为特殊"日子，所以我想用不同的颜色标记这些天，但并非所有的刻度都只是特定的.

I have a simple plot that show some values by days, and i need to mark some days as 'special' day so i want to mark these with a different color but not all ticks just some specific.

谢谢

推荐答案

您可以使用 set_color() 该列表以更改颜色:

You can get a list of tick labels using ax.get_xticklabels(). This is actually a list of text objects. As a result, you can use set_color() on an element of that list to change the color:

import matplotlib.pyplot as plt

fig, ax = plt.subplots(figsize=(5,4))
ax.plot([1,2,3])

ax.get_xticklabels()[3].set_color("red")

plt.show()

或者，您可以使用plt.gca()获取当前轴.下面的代码将给出相同的结果

Alternatively, you can get the current axes using plt.gca(). The below code will give the same result

import matplotlib.pyplot as plt

plt.figure(figsize=(5,4))
plt.plot([1, 2, 3])

plt.gca().get_xticklabels()[3].set_color("red")

plt.show()

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