轴上显示字符串的R图 [英] R plot with strings showing in the axis

问题描述

我正在根据住所的房间号(4位数字)绘制居民人数.房间号应该是字符串.但是当我使用as.character(RmNum)时，轴仍然显示为数字.

I am plotting number of residents against the dorm room numbers (4 digits). The room numbers are supposed to be strings. But when I used as.character(RmNum), the axis still shows as numeric.

meanResidents = c(3, 4, 3, 2, 4, 5)
rmNumber = c(2034, 3043, 4012, 2035, 2022, 3013)
plot(as.character(rmNumber), meanResidents, xlab = as.character(rmNumber))

我希望宿舍编号垂直显示在轴上.有人可以帮我吗?

I would want the dorm numbers showing vertically in the axis. Can someone help me with that?

推荐答案

使用功能axis，您可以指定轴的位置，刻度线(at)的放置位置并选择labels.参数las=2表示垂直于轴的标签.

With the function axis you can specify the position of the axis, where to put the tick marks (at) and choose the labels. The parameter las=2 means labels perpendicular to the axis.

plot(meanResidents, axes=FALSE, xlab="dorms")
axis(2)
axis(1, at=seq_along(meanResidents),labels=as.character(rmNumber), las=2)
box()

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