On Mon, May 2, 2016 at 1:01 PM, ch.elahe via R-help <r-help@r-project.org>
wrote:
> I just changed all the names in Command to lowercase, then this
> str_extract works fine for "pd" and "t2", but not for "PDT2". Do you have
> any idea how I can bring PDT2 also in str_extract?
>
Looking at ?grepl, I see the option: ignore.case=TRUE
PDT2=subset(df,grepl("(.*t2.*pd.*)|(.*pd.*t2.*)",df$
Command,ignore.case=TRUE)
Perhaps this will do the trick.
--
The unfacts, did we have them, are too imprecisely few to warrant our
certitude.
Maranatha! <><
John McKown
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