Get image slice/voxel plane from position

[lassoan (Andras Lasso)]

@stevenagl12

if I want to know a particular slice number given the transverse (red) position in mm’s out of all the volume slices in a faster method than calculating it, is there one?

“Computation” of IJK (voxel coordinates) from RAS or LPS (physical coordinates) is multiplication of the coordinates by a 4x4 matrix, so it cannot really be any simpler than that. The matrix you need is the RAS to IJK matrix, available in the volume node.