R中缺少值的箱形圖-ggplot

Question

我正在嘗試對具有6個變量（列）但有許多缺失值的矩陣（athTp）進行箱線圖繪制，

ggplot(athTp)+geom_boxplot()

但是也許我做錯了...

我還嘗試繪制許多箱形圖，然后再安排網格，但是最終圖非常小（按所需尺寸），從而失去了許多細節。

q1 <- ggplot(athTp,aes(x="V1", y=athTp[,1]))+ geom_boxplot()

..繼續其他5列

grid.arrange(q1,q2,q3,q4,q5,q6, ncol=6)

ggsave("plot.pdf",plot = qq, width = 8, height = 8, units = "cm")

你有什么想法？ 提前致謝！

Answer 1

# ok so your data has 6 columns like this
set.seed(666)
dat <- data.frame(matrix(runif(60,1,20),ncol=6))
names(dat) <- letters[1:6]
head(dat)

# so let's get in long format like ggplot likes
library(reshape2)
longdat <- melt(dat)
head(longdat)

# and try your plot call again specifying that we want a box plot per column
# which is now indicated by the "variable" column
# [remember you should specify the x and y axes with `aes()`]
library(ggplot2)
ggplot(longdat, aes(x=variable, y=value)) + geom_boxplot(aes(colour = variable))