Judie, You may want to see if the MedlineR library, which has a program for constructing co-occurrence matrices, will work for you. The program can be found at:
http://dbsr.duke.edu/pub/MedlineR/ Have fun with it, Tim Liao Professor of Sociology & Statistics University of Illinois Urbana, IL 61801 ---- Original message ---- >Date: Thu, 20 Jan 2005 18:19:19 -0800 (PST) >From: Judie Z <[EMAIL PROTECTED]> >Subject: [R] Need help to transform data into co-occurence matix >To: r-help@stat.math.ethz.ch > >Dear R experts, >I have the data in the following fomat(from some kind of card sorting process) > >ID Category Card numbers >1 1 1,2,5 >1 2 3,4 >2 1 1,2 >2 2 3 >2 3 4,5 > >I want to transform this data into two co-occurence matrix (one for each ID) >-- For ID 1 > 1 2 3 4 5 >1 1 1 0 0 1 >2 1 1 0 0 1 >3 0 0 1 1 0 >4 0 0 1 1 0 >5 1 1 0 0 1 > >-- For ID 2 > 1 2 3 4 5 >1 1 1 0 0 0 >2 1 1 0 0 0 >3 0 0 1 0 0 >4 0 0 0 1 1 >5 0 0 0 1 1 > >The columns and rows are representing the card numbers. All "0"s mean the card numbers are not in the same category, vice versa. > >Is there any way I can to this in R? >I would really appreciate your help. > >Judie, Tie > > > > >--------------------------------- > > > [[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 ______________________________________________ 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