如何在R中分组barchart中产生堆叠条 [英] How to produce stacked bars within grouped barchart in R

问题描述

我有以下图表

test  <- data.frame(person=c("A", "B", "C", "D", "E"), 
                    value1=c(100,150,120,80,150),     
                    value2=c(25,30,45,30,30) , 
                    value3=c(100,120,150,150,200)) 

我想为每个人绘制一个分组barchart其中一个条表示value1，另一个条是value2和value3的堆叠。有没有办法，我可以使用ggplot2做到这一点？我可以使用facet来绘制这些单独的图形一个在另一个之下吗？

I want to plot a grouped barchart (horizontal) for each person where one bar indicates value1 and the other bar is stack of value2 and value3. Is there a way with which I can do this using ggplot2? Can I use facets to plot these individual graphs one below the other?

推荐答案

这里是我想出来的，类似这里提出的解决方案：组合条形图中的堆叠条

Here is what I came up with, similar to a solution proposed here: stacked bars within grouped bar chart

1. Melt data.frame 并添加新列 cat

library(reshape2) # for melt

melted <- melt(test, "person")

melted$cat <- ''
melted[melted$variable == 'value1',]$cat <- "first"
melted[melted$variable != 'value1',]$cat <- "second"

绘制一个堆叠图表 cat vs value ，由 person 您可能需要调整标签以获得所需的内容：

Plot a stacked chart cat vs value, faceting by person. You may need to adjust the labels to get what you want:

ggplot(melted, aes(x = cat, y = value, fill = variable)) + 
  geom_bar(stat = 'identity', position = 'stack') + facet_grid(~ person)

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