Re: [R] How to define a number of matrices through loops

Hi Ajss, You instantiated mt as a vector, not a list. Try: row <- c(3,4,6,4,5) mt <- vector("list", length(row)) # list with length of "row" elements for (i in 1:5){ mt[[i]] <- matrix(nrow=row[i], ncol=4) } mt Or in one line: mt <- lapply(1:5, function(x) matrix(nrow = x, ncol = 4)) mt Hope th

[R] How to define a number of matrices through loops

Hi all I need to deal with a number (say, 5) of diferent ordered matrices  simultaneously in my computational work. I tried to define these matrices through looping, but got an error message: row <- c(3,4,6,4,5) mt <- c() for (i in 1:5){  mt[i] <- matrix(nrow=row[i],ncol=4) } mt Kindly help Y