图例中的matplotlib数字 [英] matplotlib numbers in legend

问题描述

我有两行内容，我想展示一个图例.问题是，我不能使用不同的样式(--，:，-.)，因为样式太少了，我也不能使用标记(+，*等). )，因为我需要它们在直线上显示一些点.

I have a couple of lines and I want to show a legend. The problem is, I can't use different styles (--, :, -.) because there are too few of them, and I can't use markers (+, *, etc.) because I need them to show some points on the lines.

所以我想出的最好的主意是使用数字.但是我不知道如何用数字创建图例.我什至可以自己在线条附近绘制数字(以将它们放置在最佳位置)，但是我该如何用数字绘制图例?

So the best idea I've come up with is to use numbers. But I can't figure how I can create legends with numbers. I can even draw numbers near lines myself (to place them in the best position), but how can I then draw a legend with the numbers?

即代替:

--  H
-.- Li

我想要类似的东西:

1  H
2  Li

推荐答案

也许在混合物中加入了一些乳胶?

Perhaps a little Latex thrown into the mix?

#In which we make a legend; not with lines, but numbers!

import pylab as pl
pl.rc('text', usetex=True)

pl.figure(1)
pl.clf()
ax = pl.subplot(111)
pl.plot(range(0,10), 'k', label = r'\makebox[25]{1\hfill}Bla')
pl.plot(range(1,11), 'k', label = r'\makebox[25]{12\hfill}Bla12')
lgd = pl.legend(handlelength = -0.4)
for k in lgd.get_lines():
k.set_linewidth(0)
pl.draw()
pl.show()

使用具有特定宽度和\ hfill的\ makebox对齐数字/标签，以占用标签未使用的空间.数字不是自动的，但是如果使用循环画线，则可以添加一个计数器来跟踪数字.

The numbers/labels are aligned by using \makebox with specific width and \hfill to take up the space not used by your labels. Numbers are not automatic, but if you use a loop to draw your lines then you could add a counter to keep track of the numbers.

不知道这是否是您的要求的一部分，但是可以通过将行的线宽设置为0并将图例中的保留空间设置为负数来删除这些行.找不到更整洁的方法，因为我相信图例总是要显示一行(例如，您不能将numpoints设置为0).

Don't know if this is part of your requirement, but the lines are removed by setting their linewidth to 0 and making the space reserved in the legend negative. Couldn't find a neater way of doing this as I believe a legend is always meant to show a line (e.g. you can't set numpoints to 0).

您当然也可以在情节的正确位置添加一些文本，而根本不使用图例.

You could of course also just add some text in the right spot in your plot and not use a legend at all.

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