类似热图的图，但用于分类变量 [英] heatmap-like plot, but for categorical variables

问题描述

对于大约 50 个人中的每一个，我有三个因素(set1、set2 和 set3).set1、set2 和 set3 的值为A"、B"、C".我想对这些数据制作一个类似热图的图，但让图例显示与值相关的颜色(例如，A='red'、B='blue'、C='black').有什么建议吗?

I have three factors (set1, set2, and set3) for each of about 50 individuals. The values for set1, set2, and set3 are "A","B","C". I'd like to make a heatmap-like plot of these data but have the legend show the color associated with the values (eg., A='red', B='blue', C='black'). Any suggestions?

谢谢.

推荐答案

我决定用 ggplot2 来解决这个问题会很容易(无论如何对我来说):

I decided it would be easist to approach this with ggplot2 (for me anyway):

#recreate a data set
dat <- data.frame(person=factor(paste0("id#", 1:50), 
    levels =rev(paste0("id#", 1:50))), matrix(sample(LETTERS[1:3], 150, T), ncol = 3))

library(ggplot2); library(reshape2)
dat3 <- melt(dat, id.var = 'person')
ggplot(dat3, aes(variable, person)) + geom_tile(aes(fill = value),
   colour = "white") + scale_fill_manual(values=c("red", "blue", "black"))

这篇关于类似热图的图，但用于分类变量的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！