想象一下,我有一个这样的数据帧(或所有月份的名称)
set.seed(1)
mydata <- data.frame()
mydata <- rbind(mydata,c(1,round(runif(20),3)))
mydata <- rbind(mydata,c(2,round(runif(20),3)))
mydata <- rbind(mydata,c(3,round(runif(20),3)))
colnames(mydata) <- c("id", paste0(rep(c('Mary', 'Bob', 'Dylan', 'Tom', 'Jane', 'Sam', 'Tony', 'Luke', 'John', "Pam"), each=2), 1:2))
.
id Mary1 Mary2 Bob1 Bob2 Dylan1 Dylan2 Tom1 Tom2 Jane1 Jane2 Sam1 Sam2 Tony1 Tony2 Luke1 Luke2 John1 John2 Pam1 Pam2
1 0.266 0.372 0.573 0.908 0.202 0.898 0.945 0.661 0.629 0.062 0.206 0.177 0.687 0.384 0.770 0.498 0.718 0.992 0.380 0.777
2 0.935 0.212 0.652 0.126 0.267 0.386 0.013 …