how to create surface plot with NX3 matrix?

how do I create a surface (surf) plot with a NX3 Matrix?

also how do i add a colorbar to this plot?

Thanks.

Answer 1

[Image Analyst]

surf(M);
colormap(jet(256));
colorbar;

[Sameer]

It looks really sloppy. How do i make it neater.

I would like price on one axis, quantity on the other axis and possibly net present value (npv) on the z axis

[Image Analyst]

You can use other functions to fancy it up. Though it adds other objects - not sure if that's neater or messier. But you can use xlabel(), ylabel(), title(), test(), annotation(), axis(), grid(), set(), etc.