On Tue, 26 May 2009, Sebastiano Putoto wrote: > dif is an empty matrix, what im trying to do with this command > sheet is to fill it with values. it should work, as far as i > know. how else would you do it?
Sven is right: you cannot set specific (row, column) values in a 0 by 0 matrix. You can assign to the whole matrix, or you can concatenate using the operators '~' and '|', or you can initialize the matrix as, say, a zero matrix of appropriate dimensions and then assign to specific locations within it. Allin Cottrell
