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Filters WKT (Well-known Text) geometries
according to their characteristics or geometries using the Contextual Query Language
Only the lines for which the expression is true will be kept.
Examples of queries:
- Select entities whom area is smaller than 10 units: "area(the_geom) ≤ 10"
- Select entities whom area between 10000 and 30000: "area(the_geom) BETWEEN 10000 AND 30000"
Note that the units used in the query depend on the Coordinate System.
The actual processing is done by the powerful geotools library.
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