Re: [R] how to coerce part of each column of a matrix to a vector and merge them

Hello, The answer to this one drops out of the answer to your previous question... m <- matrix(1:16, nrow=4) end <- c(2,3,1,3) ii <- cbind(sequence(end), rep(1:length(end), end)) x <- m[ ii ] Hope this helps, Michael 2011/1/11 zhaoxing731 : > Hello > > Suppose I have a matrix mat=(1:16,2) >

[R] how to coerce part of each column of a matrix to a vector and merge them

Hello Suppose I have a matrix mat=(1:16,2) [,1] [,2] [,3] [,4] [1,]159 13 [2,]26 10 14 [3,]37 11 15 [4,]48 12 16 there is a vector end=c(2,3,1,3) #coerce the 1st 2 numbers of the 1st column to a vector [1] 1 2 #coerce the 1st 3 numbers of