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proj4js with geocentric CRS

Geographic Information Systems Asked by Jawensi on October 17, 2020

I am developing a little web app to transform coordinates between CRSs. To do that I am using proj4js, but I notice that proj4js can’t work with geocentric CRSs.

Is there another tool similar to proj4 to work with geocentric CRSs, or I have to code the formulas between geocentric-geographic coordinates. Once I have geographic coordinates I use proj4js to obtain projected coordinates.

One Answer

cartopy is a good tool for this. Look at the as_geodetic and as_geocentric functions and associated classes in their CRS docs. It uses proj4 under the hood but is better about dealing with Cartesian 3d.

Answered by foobarbecue on October 17, 2020

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