r - R boxplot vs ggplot2 geom_boxplot

Question

为什么箱线图如此不同？

boxplot(loan.part.value ~ platform, p2p)

ggplot(p2p, aes(loan.part.value, platform)) + geom_boxplot()

（我编辑了刻度标签。）

> sessionInfo()
R version 3.0.1 (2013-05-16)
Platform: x86_64-apple-darwin10.8.0 (64-bit)

locale:
[1] en_GB.UTF-8/en_GB.UTF-8/en_GB.UTF-8/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] ggplot2_0.9.3.1

Answer 1

因为顺序在您的一个情节中切换。在boxplot公式中是y ~ xasggplot2的第一个位置参数x。