Hi > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Arnaud Michel > Sent: Wednesday, December 11, 2013 2:01 PM > To: R help > Subject: [R] To transform a vector of qualitatives values into a > dataframe of quantitatives values > > Hi > > From the vector > X <- c(A, A, B, C, B, A, C)
What is A, B and C? If you expect them to be letters, they need to be in parentheses. > > I would like to build the Dataframe : > data.frame( A=c(1,1,0,0,0,1,0), B=c(0,0,1,0,1,0,0), C=c(0,0,0,1,0,0,1)) > > Any ideas ? X <- sample(letters[1:3], 10, replace=T) X [1] "c" "c" "a" "b" "c" "c" "a" "a" "a" "a" data.frame(A=(X=="a"), B=(X=="b"), C=(X=="c")) Petr > > > -- > Michel ARNAUD > Chargé de mission auprès du DRH > DGDRD-Drh - TA 174/04 > Av Agropolis 34398 Montpellier cedex 5 > tel : 04.67.61.75.38 > fax : 04.67.61.57.87 > port: 06.47.43.55.31 > > ______________________________________________ > R-help@r-project.org 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@r-project.org 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.