Point array to generate meshgrid
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I have a point array describing the equal-spacing points in a hexagon, how can I use this array to generate a meshgrid with identical points so that I can use pcolor?
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Answers (2)
Walter Roberson
on 15 Dec 2023
Xu = uniquetol(X(:) );
Yu = uniquetol(Y(:) );
[Xg, Yg] = meshgid(Xu, Yu);
F = scatteredInterpolant(X(:), Y(:), Z(:)) ;
Zg = F(Xg, Yg);
pcolor(Xg, Yg, Zg);
3 Comments
Walter Roberson
on 15 Dec 2023
The locations that are outside of the convex hull of the original points, will interpolate to NaN, and pcolor() displays NaN as transparent.
Steven Lord
on 15 Dec 2023
I don't believe pcolor allows you to create elements with more or fewer than 4 sides. What I think you want to do is either create various patch objects or perhaps create an array of polyshape objects and use some of the object functions (rotate, scale, translate) to create an array of polyshape objects to plot.
H = nsidedpoly(6);
plot(H)
axis equal
H(2) = translate(H, 2, 0); % Now H has 2 hexagons
H(3:4) = translate(H, 0, 2); % Now it has 4, both of the previous two translated up 2 units
figure
plot(H)
axis equal
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