[Gretl-devel] manipulating empty matrices

Hi, not sure if at some earlier stage an error should be thrown: <hansl> matrix m1 = {} eval m1' # gives "empty matrix" eval mshape(m1, 2, 3) # gives "NULL matrix" eval transp( mshape(m1, 2, 3) ) # gives syntax error </hansl> In particular, perhaps mshape() should be illegal on an empty matrix. Or alternatively, perhaps it should be filled with NAs. Finally, a luxury request would be to have a more specific error message in the final line. thanks, sven