PROJ

About

PROJ is a generic coordinate transformation software that transforms coordinates from one coordinate reference system (CRS) to another. It's the foundational library used by most GIS software.

Features

• Transforms coordinates between coordinate reference systems
• Supports datum shifts and grid-based transformations
• Accepts WKT, PROJJSON and PROJ string definitions
• CLI tools including projinfo, cs2cs and cct
• Ships with SQLite database of CRS definitions
• Foundational dependency of GDAL, QGIS and PostGIS

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