In ArcMap 10.2.2, the 'Zonal Statistics' and 'Zonal Statistics as Table' tools do not calculate statistics for the entire polygon if there are overlapping polygons.
Last Published: July 13, 2015ArcGIS for Desktop
Bug ID Number
October 22, 2014
March 30, 2022
ArcGIS for Desktop
Operating System Version
After review by the development team, it has been determined that this issue is related to a known limitation with the software that lies outside of Esri's control. The issue's Additional Information section may contain further explanation.
Input zones containing overlaps are flattened down to one layer before performing the zonal operation. The 'Zonal Statistics as Table 2' tool processes the input in a different way, preserving the overlapping nature of zonal inputs.<a href="http://www.arcgis.com/home/item.html?id=3528bd72847c439f88190a137a1d0e67" target="_blank">http://www.arcgis.com/home/item.html?id=3528bd72847c439f88190a137a1d0e67</a>