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Join Features

Attach attributes from a target dataset to a source dataset based on spatial relationships.

Overview

Join features attaches attributes from a target dataset to features in a source dataset based on spatial relationships (intersect, within, contains, etc.).

Inputs

Source Dataset: Dataset to join to
Target Dataset: Dataset to join from
Spatial Relationship: Intersect, within, contains, etc.
Aggregation (optional): Aggregation functions for multiple matches

Outputs

New dataset containing:

Source feature geometry
Attributes from both datasets
Aggregated values (if aggregation specified)

Aggregation Functions

Sum: Sum of numeric values
Average: Average of numeric values
Count: Count of matching features
Min/Max: Minimum/maximum values

Example

{
  "source_dataset_id": 123,
  "target_dataset_id": 124,
  "relationship": "intersect",
  "aggregation": {
    "population": "sum"
  }
}

Use Cases

Attribute enrichment
Spatial data integration
Aggregated statistics
Data combination

Notes

Multiple target features can match one source feature
Aggregation required for multiple matches
Spatial relationship affects results
Processing time depends on dataset sizes

Analysis API

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