具有不同R填充的R堆叠分组条形图

问题描述

我有以下代码:

library(ggplot2)

K  <- data.frame(KK=c("30", "30", "30", "30","10", "10", "10", "10"),k=c("10", "8", "5", "2","10", "8", "5", "2"),
               Precision=c(85.2,87.5,100,100,82.5,83.3,85.2,94.4),
               Recall=c(73.3,80,100,100,51.4,54.8,61.1,87.9) ,
               Fscore=c(70.8,79.4,100,100,49.1,54.2,62.7,90.3),
               Accuracy=c(82.2,86.7,100,100,63.3,66.7,73.3,93.3))
  df2 <- reshape2::melt(K, 1:2)

   ggplot(df2,
   aes(k, value, fill = variable)) +
  geom_bar(stat = 'identity', position = 'dodge') +
 theme(legend.position = 'top')

这段代码给了我下面的情节.

This code gives me the following plot.

但是，我想获得一个这样的barplot

However, I want to get a barplot like this

k的每个值(10,8,5,2)应该是一组条形，每个条形的颜色都是一个度量.此外，KK值30的小节应为实线，并且KK为10.我不知道是否清楚.在我的输出中显示K30的值，但与K10合并并与剥离的K30丢失.

Each value of k (10,8,5,2) should be a group of bars and each colour of bar a metric. In addition, the bar from the KK value 30 should be solid and with KK of 10 stripped. I don't know if it is clear. In my output appears the values for K30, but missing with K10 merged with K30 stripped.

推荐答案

您可以为每个KK值简单地将两个不同的图层添加到绘图中.不幸的是，ggplot不能很好地处理模式(或根本无法很好地处理模式)，请参见以下文章: colors-in-ggplot2/2901210#2901210>如何在ggplot2中添加纹理以填充颜色?

You could simply add the two different layers to your plot one for each KK value. Unfortunately, ggplot does not handle patterns well (or at all really), see this post: How to add texture to fill colors in ggplot2?

为每个KK值添加不同图层的代码为:

The code to add different layers for each KK value is:

ggplot() +
  geom_bar(data=df2[which(df2$KK==10),], aes(k, value, fill = variable),stat = 'identity',position="dodge") +
  geom_bar(data=df2[which(df2$KK==30),], aes(k, value, fill = variable),stat = 'identity',position="dodge",alpha=0.5) +
  theme(legend.position = 'top')

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