小组在ggplot2的AES参数中做了什么 [英] What does group do in the aes parameter of ggplot2

问题描述

有人可以帮忙解释一下ggplot2中的group参数吗?我正在看一行代码，如下所示:

Can someone please help explain what the group parameter does in ggplot2? I'm looking at a line of code that looks as follows:

ggplot(summarized.current.data, aes(x = GROUP_ID, y= Endpoint.Value, color = GROUP_ID, group = GROUP_ID))

在图表的底部，我正确地获得了group_id，在y轴上，我获得了端点值.它可以按组正确给它们上色.但是"group = GROUP_ID"的作用是什么?图表确实有所不同，但我不知道怎么做.

On the bottom of my chart I correctly get group_id, on the y-axis I get the endpoint value. It correctly colors them by group. But what does the "group = GROUP_ID" do? The charts do come out different but I can't quite figure out how.

推荐答案

您可以使用

?aes_group_order

?aes_group_order

简而言之，组可以按因子水平绘制多条线

in short,group can draw many lines group by the factor levels

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