[R] Forecasting and demography

Hello R users, I wonder if anybody have some info about interesting forecastning population packages/books in R. It is specifically about demographics, i e models for handling fertility rates, mortality and migration etc, i'm interested. Best regards/Peter [[alternative HTML version de

[R] Matrix

Hello, Is there a function in R which can transform, let say a vector: c(1:4) to a matrix where the vector is repeated but "projected" +1 one step down for every (new) column. I want the output below from the vector above, like this: p<-c(1,2,3,4,0,0,0,0,1,2,3,4,0,0,0,0,1,2,3,4,0,0,0,0,1,2,3,4