Hi, I get (using r50188)
> nrow(NULL) NULL > NROW(NULL) [1] 0 > ncol(NULL) NULL > NCOL(NULL) [1] 1 The last seems 'wrong' to me, though matrix(NA, 0, 1) appears to be well defined. > blackhole = matrix(NA, 0, 1) > blackhole[,1] = 5 > blackhole [,1] h. -- +--- | Hiroyuki Kawakatsu | Business School, Dublin City University | Dublin 9, Ireland. Tel +353 (0)1 700 7496 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel