计数表中的ggplot2 boxplot

问题描述：

我有一个用其他工具生成的计数表，我想用ggplot2从中获得一个箱形图.

I have a count table that I have generated with another tool, and I would like to get a boxplot from it with ggplot2.

例如，假设我有:

df1 = data.frame(nSiblings = c(0, 1, 2), count = c(10, 15, 12))

代替

df2 = data.frame(nSiblings = c(rep(0, 10), rep(1, 15), rep(2, 12)))

我知道如何从第二个数据帧生成箱形图:

I know how to produce a boxplot from the second data frame:

qplot(y=df2$nSiblings, x=1, geom = "boxplot")

我知道如何从第一个数据帧生成直方图:

I know how to produce a histogram from the first data frame:

ggplot(df1, aes(x = nSiblings, y = count)) + geom_bar(stat = "identity")

但是如何从第一个数据帧中获得箱线图?

But how can I get a boxplot from the first data frame?

答

Ggplot可以处理权重，因此您可以尝试以下操作:

Ggplot is able to work with weights, so you could try this:

ggplot(df1, aes(x=1,y=nSiblings,weights=count)) + geom_boxplot()