getZoneCentroidParent

Module: dggal
Class: DGGRS

DGGRSZone getZoneCentroidParent(DGGRSZone zone)

Description

Return the parent zone of a DGGRS zone which parent is itself a centroid child

Parameters

zone  DGGRSZone  The child zone for which to return the parent which is itself a centroid child 
 
Return Value DGGRSZone  The parent zone of a DGGRS zone which parent is itself a centroid child  

Remarks


nullZone will be returned for a DGGRS without centroid children.
nullZone also currently returned for ISEA9R for which this is not yet implemented, even though ISEA9R zones technically have centroid children from the 3x3 refinement.