Dear R-users,
after several tries with lapply and searching the mailing list, i want
to ask, wheter and how it is possibly to avoid the for-loop in the
following piece of code?
set2<-as.data.frame(matrix(rnorm(9),ncol=3))
set2[1,1] <- NA
set2[3,2] <- NA
set2[2,1] <- NA
dimnames(set2)[1] <- list(c("A","B","C"))
r <- !is.na(set2)
imp <- vector("list", ncol(set2))
for (j in 1:dim(set2)[2])
{
imp[[j]] <- as.data.frame(matrix(NA, nrow = sum(!r[,j]), ncol = 1))
dimnames(imp[[j]]) <- list(row.names(set2)[r[,j] == FALSE], 1)
}
many thanks and best regards
Andreas
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