proj ☆
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Description:
Cartographic Projections Library
Type: Formula  |  Latest Version: 9.7.1@0  |  Tracked Since: Dec 2, 2025
Links: Homepage  |  formulae.brew.sh
Category: Developer tools
Tags: gis projections geospatial coordinates mapping
Install: brew install proj
About:
PROJ is a generic coordinate transformation software that transforms coordinates from one coordinate reference system (CRS) to another. This includes cartographic projections as well as geodetic transformations. It is a critical library for handling spatial data accuracy across different map projections and datums.
Key Features:
  • Supports hundreds of map projections and datums
  • Command-line interface for coordinate operations
  • Programmatic API for C, C++, and other languages
  • Handles vertical transformations and time-based coordinates
Use Cases:
  • Converting geographic coordinates between different map projections
  • Processing GIS data for accurate spatial analysis
  • Developing geospatial applications requiring coordinate transformations
Alternatives:
  • GDAL – PROJ focuses specifically on coordinate transformations, while GDAL is a broader library for reading/writing raster and vector geospatial data formats.
Version History
Detected Version Rev Change Commit
Dec 2, 2025 6:44pm 0 VERSION_BUMP 787d3ec0
Sep 16, 2025 5:31am 0 VERSION_BUMP 8e2e8a11
Sep 10, 2025 7:12pm 0 VERSION_BUMP a4645714
Nov 25, 2024 9:36am 0 VERSION_BUMP 81cb3983
Sep 16, 2024 1:03pm 0 VERSION_BUMP f4e8fec5
Dec 1, 2023 6:42pm 0 VERSION_BUMP 16255100
Jun 1, 2023 9:09pm 0 VERSION_BUMP f3614a25
Mar 2, 2023 7:41pm 0 VERSION_BUMP 17b81c71
Mar 2, 2023 7:41pm 0 VERSION_BUMP 4bbeba01
Dec 1, 2022 9:51pm 0 VERSION_BUMP df47b9a0
Dec 1, 2022 9:44pm 0 VERSION_BUMP 7c2e9384
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