On Sun, 5 Dec 2010, Santosh Srinivas wrote:
I am trying to find the function where I can search for a pattern in a
text string (I thought I could use grep for this but no :().
Correct, but reading
?grep
and running
example( grep )
should show you how to do that search.
x
[1] "abcdefghijkl"
I want to find the positions (i.e. equivalent of nchar) for "cd" and
in case there are multiple hits .. then the results as a array
You will need to deal with the possibility that there are more 'cd's in
some elements of 'text' than in others.
So, it is not obvious that an _array_ will work without some special
tooling.
HTH,
Chuck
Thank you.
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Charles C. Berry Dept of Family/Preventive Medicine
cbe...@tajo.ucsd.edu UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901
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