pointLocation / DelaunayTri - custom tri input

Hello!

I am needing a very fast version of DelaunayTri + pointLocation. In fact, I am replacing:

t = tsearch(x,y,tri,xi,yi);

I have found that I can replace it with

DT = DelaunayTri(x,y);
t = pointLocation(DT,[xi yi]);

But I want a custom tri loaded from an existing saved file instead of calculating it with DelaunayTri. I am unable to load this custom tri into DT.Triangulation - MatLab won't let me edit the structure.

??? Error using ==> subsasgn
Cannot assign values to the Triangulation.

If I try to create my own structure, it tells me

??? Undefined function or method 'pointLocation' for input arguments of type
'struct'.

Is there any way to do this?

Thanks,

Joseph

[Tale Saeedi]

tanx a lot, was helpful. just make x and y column vector

Answer 1

[Joseph]

Anyone? Guess it can't be done then...