Cheers!!!

Cheers for that guys. Matrixplot definitely works but as you said I my range values on the x- and y- axes are the number of rows and coloumns. Do you have any idea how to change this?

surfdata on the other hand doesn't seem to work for the following reason: Error, (in plots/surfdata) incorrect format for input points.

I created my matrix as such: G1:=matrix(101,93,datatype=float[8]):

so I don't really understand by surfdata won't work since the help link you send me says:  Alternatively, g may be an  by  Array of datatype float[8].  These forms correspond to those used in the GRID plot structure, as described in plot3d[structure].  If r1 or r2 is not provided, then the range 0..1 is assumed.