小编lin*_*nce的帖子

我想在使用时改变胡须的线条粗细stat_boxplot(geom = "errorbar"):

set.seed(42)
df <- data.frame(cond = factor( rep(c("A","B"), each=500) ), 
  value = c(rnorm(500,mean=1,sd=0.2),rnorm(500, mean=1.5,sd=0.1)))
ggplot(df, aes(x=cond, y=value)) + geom_boxplot(lwd=0.2)
ggplot(df, aes(x=cond, y=value)) + 
      stat_boxplot(geom = "errorbar", 
       stat_params = list(width = 0.5,size = 5.0)) + 
      geom_boxplot(lwd=0.2)

在第二个图中lwd=0.2改变了框中线条的粗细,但是胡须保持不变.

更新

谢谢@ eipi10,

ggplot(df, aes(x=cond, y=value)) + stat_boxplot(geom = "errorbar",
    width = 0.5, size=0.2) + geom_boxplot(lwd=0.2)

你的解决方案会改变晶须线的粗细,但它会使端部的水平线与盒子一样宽,而不是一半(宽度= 0.5).

但是使用

ggplot(df, aes(x=cond, y=value)) + stat_boxplot(geom ="errorbar",
    stat_params = list(width = 0.5), size=0.2) + geom_boxplot(lwd=0.2)

要么

ggplot(df, aes(x=cond, y=value)) + …