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----- Message d'origine ---- De : yoooooo <[EMAIL PROTECTED]> À : r-help@stat.math.ethz.ch Envoyé le : Jeudi, 28 Juin 2007, 2h15mn 52s Objet : Re: [R] restructuring matrix Yea... let's say I constructed a matrix with rownames/colnames be those unique elements.. then what should I do? I don't want to do mapply, etc to find the field.. I'm wondering if there's a smarter way using row/col.. etc... Thanks! Moshe Olshansky-2 wrote: > > If your original matrix is A then > unique(A$People) and unique(A$Desc) > will produce a vector of different people and a vector > of different descriptions. > > --- yoooooo <[EMAIL PROTECTED]> wrote: > >> >> Hi all, >> >> let's say I have matrix >> >> People Desc Value >> Mary Height 50 >> Mary Weight 100 >> Fanny Height 60 >> Fanny Height 200 >> >> Is there a quick way to form the following matrix? >> >> People Height Weight >> Mary 50 100 >> Fanny 60 200 >> >> (Assuming I don't know the length of people/desc and >> let's say these are >> characters matrix.. I tried play with row(), col(), >> etc.. but I don't seem >> to find like a duplicate match function... >> I'm trying to write some one/two liner that convert >> my resulting matrix to >> vector and pick the appropriate fields.. etc ) >> >> Thanks! >> >> -- >> View this message in context: >> > http://www.nabble.com/restructuring-matrix-tf3991741.html#a11334950 >> Sent from the R help mailing list archive at >> Nabble.com. >> >> ______________________________________________ >> R-help@stat.math.ethz.ch mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, >> reproducible code. >> > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > -- View this message in context: http://www.nabble.com/restructuring-matrix-tf3991741.html#a11335437 Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. _____________________________________________________________________________ Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail [[alternative HTML version deleted]]
______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
