Try with grepl:
data$ContainsThe <- ifelse(grepl("the",data$Utt),"y","n")
On Thu, Apr 29, 2010 at 2:17 PM, Claus O'Rourke <claus.orou...@gmail.com>wrote:
> Hi all,
>
> I'm writing a script to do some basic text analysis in R. Let's assume
> I have a data frame named data which contains a column named 'utt'
> which contains strings. Is there a straightforward way to achieve
> something like this:
>
> data$ContainsThe <- ifelse(startsWith(data$Utt,"the"),"y","n")
>
> or
>
> data$ContainsThe <- ifelse(contains(data$Utt,"the"),"y","n")
> ?
>
> I tried using grep
> data$ContainsThe <- ifelse(grep("the",data$Utt),"y","n")
>
> but this doesn't work becausee grep only returns the rows for which
> grep succeeded.
>
> Thanks for any pointers
>
> Claus
>
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--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
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