create datatip on a surface
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a = 0 : 0.1 : 1;
b = 0 : 0.1 : 1;
[bb,aa] = meshgrid(b,a);
Acc = aa.^2 - bb.^2;
ss = surf(aa,bb,Acc);
c = a(2)^2 - b(4).^2;
datatip(ss,a(2),b(4),c);
Hi,
why this part of my code does not work correctly?
I want to create datatip on 0.1,0.3,-0.08 but it create on 0,0,0
采纳的回答
Takashi Matsubara
2021-1-22
I have the same problem.
In surf or mesh, datatip with coordinate x,y,z may not work correctly.
datatip with 'DataIndex' may work correctly.
For DataIndex, sub2ind can be used.
In this case, below code may work correctly.
a = 0 : 0.1 : 1;
b = 0 : 0.1 : 1;
[bb,aa] = meshgrid(b,a);
Acc = aa.^2 - bb.^2;
ss = surf(aa,bb,Acc);
c = a(2)^2 - b(4).^2;
id=sub2ind(size(Acc),2,4);
datatip(ss,'DataIndex',id);
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