load("docdraw.mac");

m: apply(
matrix,
makelist(makelist(random(10.0),k,1,30),i,1,20)) $
docdraw3d("figures/draw_elevation_grid",
	color = blue,
	elevation_grid(m,0,0,3,2),
	xlabel = "x",
	ylabel = "y",
	surface_hide = true);
