getAdjacentPolygons

Determines for each polygon of the dataset the adjacent polygons and stores the result in the attribute table as a comma delimited string.

Inputs:

A polygon feature layer.
Link Field - the field which values will be used to save in the adjacency string
Option: Consider touching in a single point polygons neighbours - see example below

Outputs:

New polygon feature class. Two fields will be added to the attribute table
- [ET_Adj] - the field that will contain the adjacency string.
- [ET_Count] - the count of the adjacent polygons for each polygon

Notes:

The input polygon feature class should not have overlapping polygons. If overlaps are present - new polygons will be created from them (Clean will be performed) before collecting the adjacent polygons.
A polygon is considered adjacent to another polygon only if the two polygons have a common boundary. Two polygons that share only a common point are not considered adjacent

Example:

AdjPg

State_Name	Do not consider Touching (in a single point) polygons neighbours.		Consider Touching (in a single point) polygons neighbours.
State_Name	ET_Adj	ET_Count	ET_Adj	ET_Count
Arizona	California,Sonora,Nevada,NewMexico,BajaCalifornia,Utah	6	California,Sonora,NewMexico,BajaCalifornia,Nevada,Utah,Colorado	7
Colorado	NewMexico,Utah,Wyoming,Kansas,Nebraska,Oklahoma	6	Arizona,NewMexico,Utah,Oklahoma,Wyoming,Nebraska,Kansas	7
New Mexico	Chihuahua,Sonora,Arizona,Colorado,Oklahoma,Texas	6	Chihuahua,Sonora,Texas,Arizona,Utah,Colorado,Oklahoma	7
Utah	Nevada,Arizona,Colorado,Wyoming,Idaho	5	Nevada,Arizona,Idaho,NewMexico,Colorado,Wyoming	6

ToolBox implementation
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Command line syntax

ET_GPPolygonAdjancency <input_dataset> <out_feature_class> <ID_field>{include_touching}

Parameters

Expression	Explanation
<input_dataset>	A Point feature class or feature layer
<out_feature class>	A String - the full name of the output feature class (A feature class with the same full name should not exist)
<ID_field>	A String representing the name of a field in the in the attribute table of the input dataset field name. The field has the values used values will be used to save in the adjacency string.
{include_touching}	A Boolean indicating whether the polygons touching in a single point to be considered adjacent (see example above).

Scripting syntax

ET_GPPolygonAdjancency (input_dataset, out_feature class,ID_field,include_touching)

See the explanations above:
<> - required parameter
{} - optional parameter