如何我可以用颜色特定数据条中的R直方图

Question

如果我有一个直方图：

> hist(faithful$waiting,seq(min(faithful$waiting),max(faithful$waiting))) 

和“特殊”的频率列表：

> c(51, 52, 57, 59, 64) 

是有可能颜色对应的条到这些特殊的频率与组织块的其余部分不同的颜色？

Answer 1

您可以简单地创建颜色矢量并使用col选项。

data(faithful) 

# make sure frequencies in order and unique for the histogram call 
special <- ifelse(sort(unique(faithful$waiting)) %in% c(51, 52, 57, 59, 64), "red", "white") 

# same call with the 'col' option 
hist(faithful$waiting,seq(min(faithful$waiting),max(faithful$waiting)), col=special) 

Answer 2

乐趣GGPLOT2 ...

faithful$special <- faithful$waiting %in% c(51, 52, 57, 59, 64) 

library(ggplot2) 

ggplot(data = faithful, aes(x = waiting, fill = special)) + 
    geom_histogram(binwidth = 1, colour = 'white')