Folks: Good day. Please see the code below. three_wk_out is a dataframe with columns wk1 through wk209. I want to change the format of the columns. I am trying the code below but it does not work. I need $week in the for loop interpreted as wk1, wk2, etc. Could you please help? Thanks. Satish
R code below week_list <- paste("wk",c(1:209),sep="") for (week in week_list) { three_wk_out$week <- as.numeric(three_wk_out$week) } ______________________________________________ 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.