Re: [R] Select maximum subset

2 4:16 PM Subject: [R] Select maximum subset Suppose i have matrix z id<-c(1,2,3,4,5) a <- c(4, 3, 2, NA, 1) b <- c(3, NA, 2, 7, 1) c <-c(3, NA, NA, 7, NA) z<- cbind(id,a, b,c)     id  a  b  c [1,]  1  4  3  3 [2,]  2  3 NA NA [3,]  3  2  2 NA [4,]  4 NA  7  7 [5,]  5  1  1 NA I

Re: [R] Select maximum subset

Hi, try this:  z1<-data.frame(z) z1[colSums(is.na(z1))<=1] #  id  a  b #1  1  4  3 #2  2  3 NA #3  3  2  2 #4  4 NA  7 #5  5  1  1 A.K. - Original Message - From: Evgenia To: r-help@r-project.org Cc: Sent: Sunday, December 23, 2012 4:16 PM Subject: [R] Select maximum subset S

[R] Select maximum subset

Suppose i have matrix z id<-c(1,2,3,4,5) a <- c(4, 3, 2, NA, 1) b <- c(3, NA, 2, 7, 1) c <-c(3, NA, NA, 7, NA) z<- cbind(id,a, b,c) id a b c [1,] 1 4 3 3 [2,] 2 3 NA NA [3,] 3 2 2 NA [4,] 4 NA 7 7 [5,] 5 1 1 NA I want to select those columns for which I have the smallest