heatmap.2，顶部带有颜色键 [英] heatmap.2 with color key on top

问题描述

我有以下代码在热图上方显示颜色键.但是颜色键在热图的顶部(稍微向右移)不准确.有谁知道如何使颜色不移位?另外，如何删除热图右侧的空白?谢谢.

I have the following code to show the color key above the heatmap. But the color key is not exact on top (a little shifted to the right) of the heatmap. Does anyone know how to make the color not shifted? Also, how to remove the white space on the right of the heatmap? Thanks.

library(gplots)
heatmap.2(
  matrix(rnorm(100*10), nrow=100)
  , dendrogram='none'
  , Colv = F
  , Rowv = F
  , trace='none'
  , col = colorRampPalette(c('blue', 'yellow'))(12)
  , labRow=NA
  , labCol=NA
  , density.info='none'
  , lmat=rbind(c(4, 2), c(1, 3)), lhei=c(2, 8), lwid=c(4, 1)
)

推荐答案

一个人可以通过在左侧的格子中添加填充部分"(在我的情况下为"5"和"6")来使颜色键居中(在代码的最后一行看到#"注释:

One can center the color key by adding "padding sections" ("5" and "6", in my particular case) to the lattice at the left (see the "#" comment over the last line of the code:

heatmap.2(x=matrix(rnorm(20*10), nrow=10), Rowv=NULL,Colv=NULL, 
          col = rev(rainbow(20*10, start = 0/6, end = 4/6)), 
          scale="none",
          margins=c(3,0), # ("margin.Y", "margin.X")
          trace='none', 
          symkey=FALSE, 
          symbreaks=FALSE, 
          dendrogram='none',
          density.info='histogram', 
          denscol="black",
          keysize=1, 
          #( "bottom.margin", "left.margin", "top.margin", "left.margin" )
          key.par=list(mar=c(3.5,0,3,0)),
          # lmat -- added 2 lattice sections (5 and 6) for padding
          lmat=rbind(c(5, 4, 2), c(6, 1, 3)), lhei=c(2.5, 5), lwid=c(1, 10, 1))

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