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How are the neighbors of a polygon defined?
The neighboring relationships are defined as follows: Overlapping neighbors—polygons that have all or part of their areas overlapping Edge neighbors—polygons that have common or touching boundaries Node neighbors—polygons that touch at a point (boundary crossing or touching)
How does the polygon neighbors tool in ArcGIS work?
The Polygon Neighbors tool follows a hierarchical path to determine the type of neighbor and the statistics to record in the output table. The neighboring relationships, in hierarchical order from high to low, are overlapping, coincident edge, and node neighbors.
Which is the coincident edge of Polygon 2?
Polygon 2 has a coincident edge with polygon 1; therefore, it is an edge neighbor. The length of the coincident edge, 100, is written in the LENGTH field. The node neighbor analysis is skipped, and the field NODE_COUNT gets a value of 0.
What happens when polygon 2 overlaps polygon 1?
Polygon 2 overlaps polygon 1; the area of overlap, 1600, is written in the AREA field. The analysis of edge and node neighbors is skipped even though polygon 2 has a coincident edge with polygon 1 and crosses it at a point. Therefore, the fields LENGTH and NODE_COUNT get a value of 0.
How does the Intersect tool work with Polygon neighbors?
Overlapping neighbors—polygons that have all or part of their areas overlapping Edge neighbors—polygons that have common or touching boundaries Node neighbors—polygons that touch at a point (boundary crossing or touching) Neighboring polygons are found according to the same rules for polygons as the Intersect tool.
How are edges of polygons found in ArcGIS?
Edge neighbors—polygons that have common or touching boundaries Node neighbors—polygons that touch at a point (boundary crossing or touching) Neighboring polygons are found according to the same rules for polygons as the Intersect tool. The following discussion assumes use of the tool dialog box.
How are polygons that touch at a point found?
Node neighbors—polygons that touch at a point (boundary crossing or touching) Neighboring polygons are found according to the same rules for polygons as the Intersect tool. The following discussion assumes use of the tool dialog box. See the Polygon Neighbors tool documentation for scripting syntax.