Re: [R] compare strings

From: <markleeds_at_verizon.net>
Date: Fri, 30 Nov 2007 21:50:19 -0600 (CST)


>From: Bernd Jagla <baj2107_at_columbia.edu>
>Date: 2007/11/30 Fri PM 09:24:34 CST
>To: r-help_at_r-project.org
>Subject: [R] compare strings

below assumes that there are only 2 columns in the dataframe or that the string columns are the first two columns ?

which(df[,1] == df[,2])

>Sorry for the question, but I really cannot find the right search terms to
>find an answer..
>
>
>
>I have a data frame with strings in some of the columns.
>
>I want to know all the rows where the strings in both columns are equal.
>
>
>
>How do I do this?
>
>
>
>Thanks,
>
>
>
>Bernd
>
>
> [[alternative HTML version deleted]]
>
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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. Received on Sat 01 Dec 2007 - 04:00:37 GMT

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