如何在莱迪思封装中的水平图的顶部X轴上添加标签 [英] How to Add Labels to Top X-Axis of Levelplot in Lattice Package

问题描述

因此，我正在使用与此类似的levelplot进行类似相关矩阵的绘图(摘自:

So I'm making correlation-matrix-like plots using levelplot similar to this (taken from: Plot correlation matrix into a graph):

library(lattice)

#Build the horizontal and vertical axis information
hor <- c("214", "215", "216", "224", "211", "212", "213", "223", "226", "225")
ver <- paste("DM1-", hor, sep="")

#Build the fake correlation matrix
nrowcol <- length(ver)
cor <- matrix(runif(nrowcol*nrowcol, min=0.4), nrow=nrowcol, ncol=nrowcol, dimnames = list(hor, ver))
for (i in 1:nrowcol) cor[i,i] = 1

#Build the plot
rgb.palette <- colorRampPalette(c("blue", "yellow"), space = "rgb")
levelplot(cor, main="stage 12-14 array correlation matrix", xlab="", ylab="", col.regions=rgb.palette(120), cuts=100, at=seq(0,1,0.01))

我想为每个顶部(第二个)x轴刻度线添加标签.有人知道如何做到这一点吗?

I would like to add labels to each of the top (second) x-axis ticks. Does anyone know how to accomplish this?

谢谢

开

推荐答案

您可以通过在levelplot

如果您查找levelplot的帮助，请参考xyplot(及其他)，以获取某些信息.在xyplot帮助页面中，您可以找到scales的说明以及alternating.交替控制刻度标签的位置，可以采用4个值:

If you look up the help for levelplot, for some information, you are referred to xyplot (and others). It is in the xyplot help page, you find a description of scales and therein alternating. Alternating controls the location of the tick labels and can take 4 values:

• 0(无)，
• 1(底部/左侧)，
• 2(顶部/右侧)，
• 3(两者).

• 0 (none),
• 1 (bottom/left),
• 2 (top/right),
• 3 (both).

以下是对levelplot的调用，可让您在各个方面进行报价:

Here is the call to levelplot that gives you ticks at all sides:

levelplot(cor, main="stage 12-14 array correlation matrix", xlab="", ylab="", col.regions=rgb.palette(120), cuts=100, at=seq(0,1,0.01), scales=list(alternating=3))

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