On Oct 25, 2009, at 10:17 PM, Paul Galpern wrote:
I am sure there is something I am just not understanding about agrep
functionality.
str1 <- c("ab","aba","abc")
agrep("abc",str1, max.distance = list(insertions=0, substitutions=0,
deletions=1), value=T)
returns:
[1] "ab" "aba" "abc"
Why is "aba" a match?
The help page says that the parameters apply to the pattern, not the
arguments.
"ab" matches all of the offered arguments.
It seems to me that this should require a substitution and this has
been set to 0 in max.distance. Alternatively this would require a
deletion plus an insertion but, again, not permitted in arguments.
Thanks for your help,
Paul Galpern
PhD Candidate
--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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