European Facility For Airborne Research

European Facility For Airborne Research July 19, 2024, 23:03

Software tools - PROJ.4

Data Processing / Other

PROJ.4 image


Publisher: Frank Warmerdam
Producer: Other
Platform: Linux, Unix, Windows
Software / Code: C++
Software version: 2016
Status: Ready to use

Software sources:


The program proj (release 4) is a standard Unix filter function which converts geographic longitude and latitude coordinates into cartesian coordinates, (λ,φ) → (x,y), by means of a wide variety of cartographic projection functions. For many of the projection functions the inverse conversion, (x,y) → (λ,φ), can also be performed.

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