On Jul 14, 2011, at 9:18 PM, onthetopo wrote:
Hi there,
I have a large amino acid csv file like this:
input.txt:
P,LV,Q,Z
P,VL,Q,Z
P,ML,QL,Z
Are you also asking how to read a comma separated file?
? read.csv # and read more introductory material
There is a problem with this file, since LV and VL are in fact the
same
thing.
How do I order each element according to alphabetical order so that
the
desired output would look like:
output.txt:
P,LV,Q,Z
P,LV,Q,Z
P,LM,LQ,Z
That is not a reproducible example without input code:
Perhaps:
as.data.frame(lapply(input_dfrm, gsub, patt="LV", repl="VL"))
--
David Winsemius, MD
West Hartford, CT
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