Matplotlib色条在左侧/相反侧打勾 [英] Matplotlib colorbar ticks on left/opposite side

问题描述

一个人可能会像这样(简化)生成一个垂直的颜色条:

One could generate a vertical colorbar like so(simplified):

import matplotlib.pyplot as plt
import matplotlib as mpl

plt.figure()
c_ax=plt.subplot(111)
cb = mpl.colorbar.ColorbarBase(c_ax,orientation='vertical')
plt.savefig('my_colorbar.png')

结果如下(由于空间原因而旋转):

Resulting in something like this(rotated for space reasons):

是否可以在对面放置刻度线标签?

Is it possible to get the ticks labels on the opposite side?

推荐答案

您可以使用c_ax.yaxis.set_ticks_position()

以您的示例为例:

import matplotlib.pyplot as plt
import matplotlib as mpl

plt.viridis()

fig=plt.figure()
c_ax=plt.subplot(199)

cb = mpl.colorbar.ColorbarBase(c_ax,orientation='vertical')

c_ax.yaxis.set_ticks_position('left')

plt.savefig('my_colorbar.png')

请注意，您也可以通过类似的方式移动颜色栏标签:

Note you can also move the colorbar label in a similar way:

c_ax.yaxis.set_label_position('left')

最后，如果您有水平色条，并且想要将刻度和标签移到顶部，则可以使用xaxis上的等效功能:

And finally, in case you have a horizontal colorbar, and want to move the ticks and labels to the top, you can use the equivalent function on the xaxis:

c_ax.xaxis.set_label_position('top')
c_ax.xaxis.set_ticks_position('top')

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