setwd("D:/RDATA")
mydata<-read.table("stpos.csv",header = TRUE,sep = ",")
mydata
mydata.pca<-prcomp(mydata,scale. = TRUE)

Error in colMeans(x, na.rm = TRUE) : 'x' must be numeric
各位大神，请问我碰到的这个错误怎么解决啊