proj4: A simple interface to the PROJ.4 cartographic projections library

A simple interface to lat/long projection and datum transformation of the PROJ.4 cartographic projections library. It allows transformation of geographic coordinates from one projection and/or datum to another.

Version: 1.0-13
Depends: R (≥ 2.0.0)
Published: 2023-08-17
Author: Simon Urbanek
Maintainer: Simon Urbanek <simon.urbanek at>
License: GPL-2
NeedsCompilation: yes
SystemRequirements: proj 4.4.6 or higher (
Materials: NEWS
CRAN checks: proj4 results


Reference manual: proj4.pdf


Package source: proj4_1.0-13.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): proj4_1.0-13.tgz, r-oldrel (arm64): proj4_1.0-13.tgz, r-release (x86_64): proj4_1.0-13.tgz, r-oldrel (x86_64): proj4_1.0-13.tgz
Old sources: proj4 archive

Reverse dependencies:

Reverse depends: FeedbackTS
Reverse imports: angstroms, BIOMASS, GeoRange, ggalt, reproj
Reverse suggests: metR, ncdf4.helpers


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