Normalization

[untereiner]

I open a new issue to not mix the two questions

It is very strange because my example points aren't working until I normalize them.
The operator interp(mba::point<2>{u, v}) with large values of u and v returns 0.

[ddemidov]

Are large values of u and v still inside your domain (defined with cmin and cmax)? If not then these are outside of interpolation grid and decrease rapidly.

[untereiner]

My dataset is composed of 3D points.
The cmin, cmax are the min/max of the x,y bounding box and the values vector are the z coordinates of my points.
So yes they should

[ddemidov]

Another problem could be the initial grid is too sparse, so the data points are approximated exactly, and the rest of the grid has no overlap with the input data.

[terewenko]

There was the same problem, it turned out to be solved by reducing the grid (mba:: index<2> grid).