Hi R-Experts, I want to make a combination of different numbers 0,1,2,3 on which I want to fit a garch model. I want to automate this for several grach fitting combinations. I mean there will be several combinations and for each combination my time series will fit a garch model. I have got success to do the following. Please help me. com <- c(0,1,2,3) mat <- matrix(0, length(com)^2, 2) Sumanta Basak. THIS COMMUNICATION DOES NOT CONSTITUTE INVESTMENT ADVICE OR COUNSEL OR SOLICITATION FOR INVESTMENT IN ANY SECURITY. [[alternative HTML version deleted]]