On May 11, 2011, at 7:55 AM, chris20 wrote:
Hi
I have dataframe with different plot numbers in and different
subplots as
letters at the end of the plot number i.e. 1a, 1b 2-1a etc.
I want to delete all rows that end in a specific letter eg...
treat<-c("1a","1b","1c","2a","2b","2c","2-1a","2-1b","2-1c")
a1<-1:9
b1<-9:1
d1<-data.frame(treat,a1,b1)
> d1[-grep("c$", d1$treat), ]
treat a1 b1
1 1a 1 9
2 1b 2 8
4 2a 4 6
5 2b 5 5
7 2-1a 7 3
8 2-1b 8 2
How do I remove all rows where treat ends in "c" ? I have tried the
usual
ways of deleting rows but nothing works.
Not sure what the usual ways are for you but negative indexing is the
usual way for me.
(Could also use subset, I suppose)
Thanks
Chris
e.
David Winsemius, MD
West Hartford, CT
______________________________________________
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.
