Missing patch in surface plot (regression)
@mottelet)
Reported by Stéphane MOTTELET (BUG DESCRIPTION:
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For some trivial case, mesh (and also surf) display a surface with a missing patch (hence a hole) at the center
ERROR LOG:
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HOW TO REPRODUCE THE BUG:
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x=linspace(-1,1,4);
y=linspace(-2,2,8);
[X,Y]=meshgrid(x,y);
mesh(x,y,X.^2-Y.^2);
OTHER INFORMATION:
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Also buggy plot in 6.0.1 but was fine under 5.5.2