Increasing Edge Lines in a Surface Plot

As of now, I am using three vectors with the fit function to produce a surface plot, and example code would be here:

plot(fit([x,u],z,'poly15','normalize','on'))

My problem is I would like to increase the number of edge lines on the surface plot. As of now, it is 50x50 for the x and y axis, but I would like to make it 100x100 instead.

Thank you for your assistance

Answer 1

[Chris]

sf = fit([x,u],z,'poly15','normalize','on');
xpts = linspace(min(x),max(x),100);
upts = linspace(min(u),max(u),100);
[xx, uu] = meshgrid(xpts,upts);
surf(xx, uu, sf(xx,uu))

[Abdi Hassan]

Thank you for you help; It's greatly appreciated.