[R] Odp: dataframe

From: Petr PIKAL <petr.pikal_at_precheza.cz>
Date: Thu, 27 Nov 2008 13:09:17 +0100

Hi

r-help-bounces_at_r-project.org napsal dne 25.11.2008 05:30:52:

>
> hi there
>
> I have a dataframe
>
> abc 123 345
> abc 345 456
> lmn 567 345
> hkl 568 535
> lmn 096 456
> lmn 768 094
>
> i want the uniques of column 1 and there corresponsing column 2 and 3
> output
> abc 123 345
> lmn 567 345
> hkl 568 535
>
> cbind(DF1[,1],DF1[which(unique(DF1[,1]),c(2,3)])
> but didnt work

If test is your data frame

test[match(unique(test$V1),test$V1),]

shall selecte first unique items.

Regards
Petr

P.S. Not necessary to post your question several times.

>
> kindly let me know how to go abt it
>
> ramya
> --
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