sample1 <- c(9,9,24,24,27,27,39,45,54,54,54,57,57,57,57,66,66,69,75,81,90,102,105,108,120,120,123)
我怎样才能做到这一点(9,0,15,0,3,0 ...)等等?这个程序叫什么?
sample1 <- c(9,9,24,24,27,27,39,45,54,54,54,57,57,57,57,66,66,69,75,81,90,102,105,108,120,120,123)
我怎样才能做到这一点(9,0,15,0,3,0 ...)等等?这个程序叫什么?