proj4js with geocentric CRS

Question

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.

foobarbecue · 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

proj4js with geocentric CRS

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