[R] Search a string inside a data.frame

Petr PIKAL petr.pikal at precheza.cz
Wed Dec 21 10:19:27 CET 2011

> Dear all,
> I have a string and I want to search for its existance inside a 
> (or in a column of the data.frame). 
> One way is for me to do this manually: Make a for loop for the number of 

> elements and compare one by one element. Is there though any more 
> way to do that?

Rather vague question. What kind of string? Shall it be matched fully?

sapply(your.data.frame, match, "your.string", nomatch=0)

gives you a result 1 where it matches the string and 0 where not.


> B.R
> Alex
>    [[alternative HTML version deleted]]
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