Python matplotlib 图例背景颜色
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matplotlib legend background color
提问by user1850133
Is there while rcParams['legend.frameon'] = 'False'a simple way to fill the legend area background with a given colour. More specifically I would like the grid not to be seen on the legend area because it disturbs the text reading.
有没有rcParams['legend.frameon'] = 'False'一种简单的方法可以用给定的颜色填充图例区域背景。更具体地说，我希望在图例区域不要看到网格，因为它会干扰文本阅读。
The keyword framealphasounds like what I need but it doesn't change anything.
关键字framealpha听起来像我需要的，但它不会改变任何东西。
import matplotlib as mpl
import matplotlib.pyplot as plt
mpl.rcParams['legend.frameon'] = 'False'
plt.plot(range(5), label = u"line")
plt.grid(True)
plt.legend(loc = best)
plt.show()
I've also tried:
我也试过：
legend = plt.legend(frameon = 1)
frame = legend.get_frame()
frame.set_color('white')
but then I need to ask how can I change the background colour while keeping the frame on? Sometimes I want it ON with a background colour other than white. And also, is there a way of changing the colour of the frame? With the above code I was expecting to change the colour of the frame only, not the background.
但是然后我需要问如何在保持框架打开的同时更改背景颜色？有时我希望它使用白色以外的背景颜色打开。而且，有没有办法改变框架的颜色？使用上面的代码，我希望只更改框架的颜色，而不是背景。
采纳答案by Molly
回答by spinup
In addition to Molly's method you can turn the frame off using the linewidth:
除了Molly的方法之外，您还可以使用 linewidth 关闭框架：
frame.set_linewidth(0)
I used that method in a small convenience function I wrote to hide the legend frames for the same reason you cite. The function is called adjust_legendsin the print_targeted_plotsmodule available from github.
出于与您引用的相同的原因，我在编写的一个小型便利函数中使用了该方法来隐藏图例框架。该函数adjust_legends在githubprint_targeted_plots提供的模块中调用。
回答by oveoyas
Using matplotlib.pyplot, plt.legend(facecolor='white', framealpha=1)will give your legend a white background without transparency.
使用 matplotlib.pyplot，plt.legend(facecolor='white', framealpha=1)会给你的图例一个没有透明度的白色背景。
