On Jul 23, 2010, at 6:18 PM, chipmaney wrote:
Here is an example dataset:
ZoneCover.df<- data.frame(Value=c(1,2))
row.names(ZoneCover.df) <- c("Floodplain1.Tree", "Floodplain1.Shrub")
I want to Export the Row.Names to a column in the dataframe:
ZoneCover.df$ID <- names(ZoneCover.df)
which yields this:
ZoneCover.df
Value ID
Floodplain1.Tree 1 Floodplain1.Tree
Floodplain1.Shrub 2 Floodplain1.Shrub
QUESTION:
How do I remove the .Tree and .Shrub extensions from the ZoneCover$ID
values?
?gsub
?regex
(The "." character needs to be "escaped" with doubled "\" but the
second "." is a regex for any character.)
> gsub("\\..*$","", c("Floodplain1.Tree", "Floodplain1.Shrub"))
[1] "Floodplain1" "Floodplain1"
Use the same method with assignment to the column:
ZoneCover.df$ID <- gsub("\\..*$","", ZoneCover.df$ID)
--
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.
