-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear R-helpers,
my data.frame is of the form x <- data.frame( f=gl(4,3), X=rep(0:2,4), p=c(.1,.2,.3)) x f X p 1 1 0 0.1 2 1 1 0.2 3 1 2 0.3 4 2 0 0.1 5 2 1 0.2 6 2 2 0.3 7 3 0 0.1 8 3 1 0.2 9 3 2 0.3 10 4 0 0.1 11 4 1 0.2 12 4 2 0.3 which tabulates some values p(X) for several factors f. Now I want to put it in "wide" format, so that factor levels appear as column heads. Note also that X starts from zero. It would be nice if I could simply access p_f[X==0] as f[0]. How can I possibly do that? (The resilting object does not have to be a data.frame. As there are only numeric values, also a matrix would do.) I tried the following y<-unstack(x,form=p~f) row.names(y) <- 0:2 y X1 X2 X3 X4 0 0.1 0.1 0.1 0.1 1 0.2 0.2 0.2 0.2 2 0.3 0.3 0.3 0.3 Now, how to access X3[0], say? Maybe reshape would be the right tool, but I could not figure it out. I appreciate your help. Thanks! -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) iD8DBQFEn9G2XjamRUP82DkRAorGAJ9JirG7WtNJLWRQkJvgW0zTFHTYagCgvONw IC4jgoxE2+CsOmmogv5dzF0= =24Kj -----END PGP SIGNATURE----- ______________________________________________ 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