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Well-known text

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PeterC:

Well-known text (WKT) is a text markup language for representing vector geometry objects on a map. It is a mapping term new to me so this post tries to pull together some of its features and utilities.

* This Wikipedia article describes WKT very fully
* If projection information comes in well-known text format in a .prj file you can convert it into standard EPSG codes (and here), as needed by GIS systems, using the Prj2EPSG service

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