We need a self-contained, reproducible example of what you have, and
what you want.
Is this close?
tmp <- data.frame(a = rnorm(278))
tmp$newcol <- ""
tmp[seq(97,278, by = 12), "newcol"] <- "A Name"
ecvet...@uwaterloo.ca wrote:
Hello,
I have a data frame with many rows, and I want to create a column with a
name only at every 12th row, starting from 97 to 278.
Thanks in advance!
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______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
