如何创建每个标签只有一个符号的散点图图例? [英] How to create a scatter plot legend with only one symbol for each label?

问题描述

如何创建不显示两个符号的散点图图例?我能理解为什么在按行连接符号时为什么要这样做，但是对于纯散点图，我在图例中只需要一个符号示例.上一篇stackoverflow帖子中的图显示了我的意思:

How can I create a scatter plot legend without two symbols showing up each time? I can understand why you'd want this when you're joining symbols by lines, but for a pure scatter plot, all I want in the legend is one example of the symbol. This plot from a previous stackoverflow post shows the kind of thing I mean:

推荐答案

在legend命令中，您可以使用scatterpoints选项:

In the legend command you can use the scatterpoints option:

ax.legend(loc=0, scatterpoints = 1)

对于法线图，它是选项numpoints.

For a normal plot, it is the option numpoints.

在这里您可以找到有关图例的关键字参数的更多信息: http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.legend

Here you can find more information about the keyword arguments for the legend: http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.legend

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