Hi R'ers- I'll believe this can be done and that I'm just not clever enough.
I'm trying to do this in 2D, but i think we have the same problem in 1D. #Assume you have some 1D time series d<-rnorm(100) #Say you want to get the average over intervals of different lengths #like from time 10 to time 24 and time 51 to time 86 starts <- c(10,51) ends <- c(24,86) results <-c(NA,NA) #then you'd typically loop for (i in 1:2) { results[i] <- mean(d[starts[i]:ends[i]) } can it be done without looping? Thanks in advance. James [[alternative HTML version deleted]] ______________________________________________ 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.