Hi, I have two vector of margins. Now I want to create "fill" matrix that reflects the margins. seats <- c(17,24,28,30,34,36,40,44,46,50) mandates <- c(107,23,24,19,112,19,25,20) Both vectors adds up to 349. So I want a 10x8 matrix with row sums corresponding to "seats" and column sums corresponding to "mandates".