how can i plot the convex hull????

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ali hadjer
ali hadjer 2015-11-8
回答： ISRAA ADIL HAYDER AL-RUBAYE 2020-9-5
How can I plot the convex hull(k) in the axes:
net = [1:n;rand([1,n])*x;rand([1,n])*y];
net1 = net;
plot(net(2,:),net(3,:),'bo','MarkerSize',5,'MarkerFaceColor','b');
xx=net(2,:);
yy=net(3,:);
dt = DelaunayTri(xx',yy');
P = [xx',yy'];
[K AV] = convexHull(dt)
I try different plot but they don't work:
%trisurf(K, dt.xx(:,1),dt.xx(:,2),dt.xx(:,3), 'FaceColor', 'cyan')
%plot(dt.xx(K,1),dt.xx(K,2), 'r');
%K =convexHull(dt);
%plot (K,'-.r');
and I have different error message
plz help me

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采纳的回答

Image Analyst
Image Analyst 2015-11-8
Add this code:
hold on;
plot(xx(K), yy(K), 'r');
and don't use that function, like the help says. It's been deprecated. Use convhull() instead.

更多回答（1 个）

ISRAA ADIL HAYDER AL-RUBAYE
you have to specify the x,y coordinates of the nodes of the network that represents width and length of the network respectively ....
so the width,length should be assigned to nombers for example : 100
x=100;
y=100;
hopefully , thats going to work
israa
iraq

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