This may be a question to post on a GIS forum, but I was wondering if among the spatial data experts here, someone could help me calculate the extension of Moran's I to 3D? Our data is about 3D habitat complexity, specificlaly, the 3D complexity of the habitat provided by algae to other marine organisms. The idea is to estimate Moran's I using 3D data we have in which each voxel (3d pixel) is either water or algae. So, the neighbours for each point are distributed in 3d space.
Norbert Marwan used this to calculate bone complexity (medical journal) but there is something about how poitns are accounted for in the index calculation avoid repetition of neighbour pairs that I don't understand
Any help would be most appreciated.
All the best,