# I have a function that takes a few vectors manipulates them and then outputs a matrix of results:
funct1 <- function(eh,be){ ce <- eh+be data.frame(eh,be,ce) } ones <- c(1,1,1) twos <- c(2,2,2) funct1(ones,twos) # I would like to iterate it and save the results from each iteration. I could of course write a loop but I would like to do this is the most efficient way possible. The best I have come up with is this: functM <- function(eh,be,period,endPeriod){ period <- period+1 ce <- eh+be {if (period < endPeriod) functM(ce,be,period,endPeriod) else data.frame(eh,be,ce,period)} } ones <- c(1,1,1) twos <- c(2,2,2) functM(ones,twos,0,4) # As you can see it only reports the results form the last iteration. Here it is the 4th iteration, but if you change the last argument of the previous run of functM, you can see that it will always report the final matrix. How can I have it save/store/write the results of each iteration. I do not care if it stacks it all into the same matrix or if I have to write.csv each time. I just want to do it in the most efficient way possible (the actual program will run for many many iterations of large vectors. # Thanks. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.