Equivalent in R of the Contains operator in SAS
On Apr 16, 2016, at 6:30 AM, peter dalgaard <pdalgd at gmail.com> wrote: Check the string matching functions, e.g. grepl().
Concretely: merge3[, grepl( "Email|Email\\.x", names(merge3) ) ] # since "." is special in grepisch patterns. Which admittedly is a bit redundant since any character value that included `Email.x" would already have been picked up by the "Email" alternative.
-pd
On 16 Apr 2016, at 15:18 , Dan Abner <dan.abner99 at gmail.com> wrote:
Hi all,
I want to select all variables in the data.frame with a name that
includes are certain string. Something like the following:
merge3[,names(merge3) %in% c("Email","Email.x")]
But there are too many variations on the Email variable names to list them all.
Can anyone advise?
Thanks!
Dan
David Winsemius Alameda, CA, USA