matrix data to surface

Hi. Sorry if this is a basic question, but i've searched and i haven't been able to understand it by muself. I have a matrix that results on something like:

     5   10  15  20
100  10  20  40  50
200  35  45  65  70
300  50  65  80  90

I want a surface graph with that column (areas) and row (volume), and in excel this is pretty basic but here when i use the surface function i can only submit the inside numbers (the 3x4 matrix). Any help will be greatly appreciated. Thanks, Inês

Answer 1

[Torsten]

[X,Y]=meshgrid(5:5:20,100:100:300);
surf(X,Y,[10 20 40 50;35 45 65 70;50 65 80 90]);

Best wishes

Torsten.

[in-p]

wow, that simple. thank you!