Use of casadi.interpolant in Matlab

[federicoc-wae]

Hi all,

I am trying to use the casadi interpolant class, but when I perform a simple example I get a weird result.

Here is my code in Matlab:
x = 0;
y = 0;

X = (0:1:100)';
Y = (-100:1:100)';

[Xm,Ym] = meshgrid(X,Y);

Zm = Xm+Ym.^2;

lutZ = casadi.interpolant('lutZ','bspline',{X,Y}, Zm(:));

res = full(lutZ([x,y])); % = 2550
res2 = interp2(X, Y, Zm, x, y); % = 0

Can someone tell me why res is not equal to res2?
res2 is the correct one and it is the result I expect from the casadi interpolant function.

Thanks a lot!
Federico

[federicoc-wae]

Ok, I found the solution. That was easy.
Zm must be transposed.

Sorry for that :)