Grouped geometry union

Supported in: Batch

Combines the grouped geometries to create a single geometry.

Expression categories: Geospatial

Declared arguments

• Expression: The column of geometries to combine.
  Expression<Geometry>

Output type: Geometry

Examples

Example 1: Base case

Argument values:

• Expression: geometry

Given input table:

Outputs: {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[0.5,1.0],[1.0,1.0],[1.5,1.0],[1.5,0.0],[1.0,0.0],[0.5,0.0],[0.0,0.0]]]}

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Example 2: Base case

Argument values:

• Expression: geometry

Given input table:

Outputs: {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]]}

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Example 3: Base case

Argument values:

• Expression: geometry

Given input table:

Outputs: {"type":"MultiPolygon","coordinates":[[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[1.0,0.0],[0.0,0.0]]],[[[5.0,5.0],[5.0,6.0],[6.0,6.0],[6.0,5.0],[5.0,5.0]]]]}

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Example 4: Base case

Argument values:

• Expression: geometry

Given input table:

Outputs: {"type":"Polygon","coordinates":[[[0.0,0.0],[0.0,1.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0],[0.0,0.0]]]}

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Example 5: Base case

Argument values:

• Expression: geometry

Given input table:

Outputs: {"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]}

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Example 6: Base case

Argument values:

• Expression: geometry

Given input table:

Outputs: {"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]}

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Example 7: Base case

Argument values:

• Expression: geometry

Given input table:

Outputs: {"type":"GeometryCollection","geometries":[{"type":"LineString","coordinates":[[0.0,0.0],[1.0,0.0]]},{"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]}]}

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Example 8: Null case

Argument values:

• Expression: geometry

Given input table:

Outputs: {"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]}

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Example 9: Edge case

Argument values:

• Expression: geometry

Given input table:

Outputs: {"type":"Polygon","coordinates":[[[1.0,0.0],[1.0,1.0],[2.0,1.0],[2.0,0.0],[1.0,0.0]]]}

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