hi, see colnames() simple use, good result.
ex: if df is your data.frame and toto = the column name you want to extract do: df2<-df[,colnames(df)==toto)] #extract all toto column Le lun 05/07/2004 à 14:53, Rado Bonk a écrit : > Dear R users, > > I'm coming back to R after while. I have a data frame with 200 columns, > each column has a name. How to extract all columns to a new dataset, but > the specified (by names) ones? > > I was playing with that for a little bit using the vector syntax but got > several syntax errors. > > > Thanks, > > Rado > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html -- ------ Yves Magliulo <[EMAIL PROTECTED]> Climatology research department, CLIMPACT Tel. : +33 (0) 1 55 07 85 77 Fax. : +33 (0) 1 55 07 85 79 Universite Pierre et Marie Curie Boite 101 - Tour 45 - 5eme etage - Couloir 45/46 4 place Jussieu, 75252 Paris CEDEX 05, France ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
