R help - Nov 2011 - Searching for the first two characters of a string

Hi,

I'm trying to search the data in a column for the first two characters, and
return all rows that match the search criteria. 

Any suggestions?

Thanx

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dfr <- data.frame(txt=
c("abab","ghghg","ththt","dfdfdf"),
yvar=1:4)

ind <- substr(dfr$txt,1,2)

dfr[ind == "ab",]



greetings,
Remko

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