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TiddlyWiki5/plugins/tiddlywiki/geospatial/docs/geodifference.tid

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title: $:/plugins/tiddlywiki/geospatial/docs/geodifference
caption: geodifference operator
tags: $:/tags/GeospatialDocs
!! `geodifference` operator
The `geodifference` operator calculates the difference between two or more [[GeoJSON Polygon Features|GeoJSON Polygon Feature]].
Each input list item is interpreted as a [[GeoJSON Polygon Feature Collection]] containing polygons.
```
[geodifference[]]
```
!! Examples
<$testcase>
<$data $compound-tiddler="$:/plugins/tiddlywiki/geospatial/tests/operators/geodifference-interactive"/>
<$data $tiddler="$:/plugins/tiddlywiki/geospatial"/>
</$testcase>