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How is the nearest neighbor index calculated in ArcGIS?
Calculates a nearest neighbor index based on the average distance from each feature to its nearest neighboring feature. The Average Nearest Neighbor tool returns five values: Observed Mean Distance, Expected Mean Distance, Nearest Neighbor Index, z-score, and p-value.
When to use the average Nearest Neighbor tool?
It is always best to supply an Area value when using the Average Nearest Neighbor tool. Although this tool will work with polygon or line data, it is most appropriate for event, incident, or other fixed-point feature data. For line and polygon features, the true geometric centroid for each feature is used in computations.
What are near features in ArcGIS help 10.2?
One or more feature layers or feature classes containing near feature candidates. The near features can be of point, polyline, polygon, or multipoint. If multiple layers or feature classes are specified, a field named NEAR_FC is added to the input table and will store the paths of the source feature class containing the nearest feature found.
What is the value of near in ArcGIS Pro?
Angle of the line at the FROM_X and FROM_Y location which connects the input features to the near feature. If no near feature is found or the near feature intersects the input feature, the value will be 0. The values for NEAR_FID and NEAR_DIST will be -1 if no feature is found within the search radius.
Why do you use average Nearest Neighbor tool?
The average nearest neighbor method is very sensitive to the Area value (small changes in the Area parameter value can result in considerable changes in the results). Consequently, the Average Nearest Neighbor tool is most effective for comparing different features in a fixed study area.
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.
How to find the average nearest neighbor in Excel?
The Average Nearest Neighbor tool returns five values: Observed Mean Distance, Expected Mean Distance, Nearest Neighbor Index, z-score, and p-value. These values are accessible from the Results window and are also passed as derived output values for potential use in models or scripts.