[R] Help in creating a matrix

arunkumar1111 akpbond007 at gmail.com
Thu Apr 12 12:53:14 CEST 2012


I have dataset with n variables, say n =3  x y z

the formula should be form = x+y+z+x*x +x*y+x*z +y*y + y*z+z*z

my code has to for  loop 

Is there any way  to reduce two loops

  for (i in 1:n)
      for (j in i:n)
        dat= cbind(dat,dat[,i]*dat[,j])

Thanks in Advance
View this message in context: http://r.789695.n4.nabble.com/Help-in-creating-a-matrix-tp4551532p4551532.html
Sent from the R help mailing list archive at Nabble.com.

More information about the R-help mailing list