ifelse(mat1, mat2, NA) should do what you want.
Patrick Burns [EMAIL PROTECTED] +44 (0)20 8525 0696 http://www.burns-stat.com (home of S Poetry and "A Guide for the Unwilling S User") ISAIAH SHALWITZ wrote: >This seems like a simple problem but I can't figure it out: > >I have two identical DIMENSION matrices. Both contain only binary values NOT >identical between matrices. What I want to do: If in cell (1,1) the value in >the first matrix (x) equals 1, then I keep the value in cell (1,1) in the >second matrix (y). If in cell (1,1) the value in the first matrix (x) equals >0, then I change the value in cell (1,1) in the second matrix (y)to missing >(NA). Repeat for every pair of cells (coordinates of the paired cells always >match). > >Please help. > >I > >______________________________________________ >[email protected] mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > > > > > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
