本文介绍了修改箱标签直方图的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我做了以下直方图:
one <- c(2,2,3,3,3,3,4,4,4,4,4,4,5,5,5,5,6,6,7,8)
hist(one, breaks = 3)
在x轴上,我需要三个标签来概括如下所示的值范围:2-3;而不是x轴上的2-8. 4-5; 6-8
Instead of a range from 2-8 on the x-axis, I need three labels on the x-axis that summarize the range of values like this: 2-3; 4-5; 6-8
如何修改x轴的代码,使其仅在正确的位置得到三个标签?
How can I modify the code for the x-axis to get just three labels, and in the correct location?
推荐答案
使用以下方法很容易为范围的中点标记:
It's easy to label midpoints for the ranges using:
h <- hist(one, breaks = 3, xaxt = 'n')
axis(1, h$mids, h$mids)
但是,如果要使标签成为命名范围的字符串,则必须做更多的工作.看看str(h)
可以使用的内容:
But if you want to have the labels be character strings naming the ranges, you have to do a little more work. Take a look at str(h)
to see what you have to work with:
> str(h)
List of 6
$ breaks : num [1:4] 2 4 6 8
$ counts : int [1:3] 12 6 2
$ density : num [1:3] 0.3 0.15 0.05
$ mids : num [1:3] 3 5 7
$ xname : chr "one"
$ equidist: logi TRUE
- attr(*, "class")= chr "histogram"
您可以使用breaks
元素构造轴标签:
You can use the breaks
element to construct axis labels:
h <- hist(one, breaks = 3, xaxt = 'n')
axis(1, h$mids, paste(h$breaks[1:3], h$breaks[2:4], sep=' - '))
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