在Matplotlib中将图例作为单独的图片获取 [英] Get legend as a separate picture in Matplotlib

问题描述

我正在开发Web应用程序，并希望在页面的不同位置显示图形及其图例.这意味着我需要将图例另存为单独的png文件.在Matplotlib中以某种或多或少的直接方式可能吗?

I'm developing a Web application and want to display a figure and its legend in different locations on the page. Which means I need to save the legend as a separate png file. Is this possible in Matplotlib in a more or less straightforward way?

推荐答案

这可能有效:

import pylab
fig = pylab.figure()
figlegend = pylab.figure(figsize=(3,2))
ax = fig.add_subplot(111)
lines = ax.plot(range(10), pylab.randn(10), range(10), pylab.randn(10))
figlegend.legend(lines, ('one', 'two'), 'center')
fig.show()
figlegend.show()
figlegend.savefig('legend.png')

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