- index.matrix[cbind(1:nl, 1:nl)] <- NA
- rate[cbind(1:nl, 1:nl)] <- 0
- rate[rate == 0] <- np + 1 # to avoid 0's since we will use this an numeric indexing
+ tmp <- cbind(1:nl, 1:nl)
+ index.matrix[tmp] <- NA
+ rate[tmp] <- 0
+ rate[rate == 0] <- np + 1 # to avoid 0's since we will use this as numeric indexing