- Number of neighbors
-
The number of regions which has an adjacent outline with the
selected region.
- Adjacent to an infinite face
-
"yes" if the region has an infinite face as neighbour.
- Number of included connected components
-
The number of included connected components in the region. A
included connected component is constituted by one or more regions which are
included in the selected region. This included regions are grouped
to form a connected component of which all the outline is adjacent
to the selected region.
- Number of holes
-
The number of regions which are included into the selected
region. that means all the outline of the region is within the
selected region.