[R] select on letter
dwinsemius at comcast.net
Fri Feb 13 17:02:57 CET 2009
You really should not assign a new value to "letters" since it is a
very useful constant vector that allows working with lowercase
letters. Notice that Domitris did not copy your code exactly.
Next time you start R type letters at the R prompt. You cannot do so
now, since you overwrote that constant with your own construction.
LETTERS would still work.
On Feb 13, 2009, at 10:18 AM, naomi.duijvesteijn at ipg.nl wrote:
> I was wondering if anybody can help me. In the small data set below
> I would like to select the index which doesn't contain the letter
> 'N' in the variable 'letters'. How can I discard these rows when the
> letter has a different position everytime (but the same letter for
> the whole column)?
> letters<-c("CCTTGGAA", "NNTTGGAAT", "AACCTTNN")
> index letters
> 1 1 CCTTGGAA
> 2 2 NNTTGGAAT
> 3 3 AACCTTNN
> Thanks in advance!
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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