Le 24/03/2017 à 18:40, paul.carr...@free.fr a écrit :
Hi all,
I don't know if my question is relavante (or not), but I'm wondering
what is the best way to perform a 3D interpolation, from for the
matrix definition to the interpolation procedure.
Let me using a basic example: I've some curves y = f(x,T) defining a
material behaviour at different temperatures i.e. 1 curve (x,y) per
temperature:
- y = f(x,20)
- y = f(x,100)
- y = f(x,200)
etc.
What is the best way to define a single matrix? [x y T] ?
It depends on whether f() is vectorized or not. It could be something like
t = [20 100 200];
[X, T] = ndgrid(x, t);
Y = f(X,T);
// or
Y = feval(x, t);
Then:
M = [X(:) Y(:) T(:)];
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