Nearest Neighbor Analysis

Find nearest features from a target dataset for each feature in a source dataset.

Overview

Nearest neighbor analysis identifies the closest features between two datasets, calculating distances and joining attributes.

Inputs

Source Dataset: Dataset to find nearest neighbors for
Target Dataset: Dataset to search for neighbors
Max Distance: Maximum search distance (optional)
Limit: Maximum neighbors per feature (default: 1)

Outputs

New dataset containing:

Source feature geometry
Nearest target feature information
Distance: Distance to nearest neighbor
Attributes from both datasets

Example

{
  "source_dataset_id": 123,
  "target_dataset_id": 124,
  "max_distance": 5000,
  "limit": 1
}

Background Jobs

This analysis runs as a background job. See Nearest Analysis Worker for details.

Use Cases

Service accessibility analysis
Nearest facility identification
Distance calculations
Spatial joins

Notes

Spatial indexes critical for performance
Large max_distance values may slow processing
Multiple neighbors can be found per feature
Results include distance in dataset units