Re: [R] Loops for repetitive task

Hi: Try this: ## Function that takes a data frame as input and outputs a data frame: chrSumm <- function(d) { # d is a data frame colnames(d) <- c("chr","start","end","base1","base2", "totalreads","methylation","strand") TR <- nrow(d) RG1 <- sum(d['totalreads']

Re: [R] Loops for repetitive task

, header=F) ... } HTH Peter Alspach > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of a217 > Sent: Wednesday, 10 August 2011 4:32 p.m. > To: r-help@r-project.org > Subject: [R] Loops for repetitive

[R] Loops for repetitive task

Hello, I have an R script that I use as a template to perform a task for multiple files (in this case, multiple chromosomes). What I would like to do is to utilize a simple loop to parse through each chromosome number so that I don't have to type the same code over and over again in the R console