improvement for surface plots

[John W. Eaton]

On 11-Mar-2008, Kai Habel wrote:

| Hello all,
| 
| with the current tip surface plots do not look nice. The grid is plotted
| in front of the surface. The attached patch makes two changes, first
| surfaces are plotted in front of the grid, thus the surface looks opaque.
| h = surf(peaks);
| 
| 
| Second, for mesh plots an uniform color value works now.
| h = mesh(peaks);
| set(h,'EdgeColor','r');
| 
| 
| But, to make this work a very recent gnuplot is required (4.2.3)
| otherwise the mesh is not drawn. See also this [1] discussion.

I applied this patch to my archive.

Now when I try to set the edgecolor, I get a white mesh.  Is that what
you mean by not working with older versions?  I'm using 4.2.2.

Thanks,

jwe