Hi Angel,

I don't think that Ovito can directly solve your problem. But I am still trying to understand exactly what you would like to do, or what you would like Ovito to do for you.

As you said, the PTM already allows to calculate the local crystal orientations at each atom. If I understand you correctly, you would like to take an input vector in the simulation coordinate system, for example the normal vector of a slicing plane, and transform it to the local lattice coordinate system. Is this the information you are interested in?

-Alex