How did they make this Hexagonal Matrix?...

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Kalamaya
Kalamaya 2012-12-3
Hi, Im trying to figure out how the following figure was generated using MATLAB, in this video.
Specifically, how did they make the hexagonal cell matrix that is being shown here? I am really not sure where to even begin learning about this technique... Thanks!

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回答（2 个）

Sean de Wolski
Sean de Wolski 2012-12-3
编辑：Sean de Wolski 2012-12-3
Probably by making lots of little hexagonal patches.
doc patch
For more information.
More because Matt J motivated me to try it, lopsided non-aligned patches!
x1 = [0.5 1 1.5 1 0.5 0];
y1 = [0 0 0.5 1 1 0.5];
n = 10;
xd = bsxfun(@plus,x1,(1:1.5:n*1.5)');
yd = bsxfun(@plus,y1,(1:1.5:n*1.5)');
for ii = 1:n
for jj = 1:n
patch('XData',xd(ii,:),'YData',yd(jj,:),'FaceColor',rand(1,3))
end
end
Matt J
Matt J 2012-12-3
编辑：Matt J 2012-12-3
Building upon Sean's remark, it might look something like this
[x,y]=ndgrid(1:42,1:42);
idx=logical(mod(y,2));
x(idx)=x(idx)+.5;
[v,c] = voronoin([x(:),y(:)]);
clf
for i=1:length(c)
patch('XData',v(c{i},1),'YData',v(c{i},2),...
'EdgeColor','b','FaceColor',[255 182 193]/255)
end

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