You can use gsub() to delete all the characters after the first
semicolon by replacing them with "". If you provide the requested
reproducible example, I imagine someone will provide you with working
code, if reading the help for gsub() isn't enough to get you going.
Sarah
On Mon, Mar 12, 2012 at 12:27 PM, stella <dorotheabusse at yahoo.de>
wrote:> Hi,
> I have a list of names (alphanumeric characters) and each row by itself
> contains a different number of names seperated by a semicolon
(";"). There
> are also rows with no entry. I would like to have the name before the first
> semicolon in each row, if there is any entry. Does anyone have an idea how
> to solve this in R?
>
> Thank you!
> ?Stella
>
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--
Sarah Goslee
http://www.functionaldiversity.org