Ciao Giovanni, Try this.
x<-matrix(sample(0:4,25,replace=T),nc=5) x x[x>0]<-1 x Miltinho uno capoeirista brasiliano ----- Mensagem original ---- De: giovanni bacaro <[EMAIL PROTECTED]> Para: [EMAIL PROTECTED] Enviadas: Segunda-feira, 17 de Dezembro de 2007 14:03:34 Assunto: [R] convert table Dear R user, a very simple question: I have a table like this: coor v1 v2 v3 x1 12 33 123 x2 1 123 x3 12 x4 33 1 and I'd like to tranform this matrix in presence/absence data.frame coor 1 12 33 123 x1 0 1 1 1 x2 1 0 0 1 x3 0 1 0 0 x4 1 0 1 0 Could you suggest me a direct way to do this? Thank you Giovanni ______________________________________________ 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. para armazenamento! [[alternative HTML version deleted]] ______________________________________________ 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.
