Geodetic to/from geocentric spherical conversion #55
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Add two functions to new module `pymap3d/spherical.py`: `geodetic2spherical` and `spherical2geodetic` to convert between geocentric geodetic (latitude, longitude, altitude) and geocentric spherical coordinates (spherical latitude, longitude, radius). Test against equator and pole easily deduced values as well as latitude=45 with values pre-computed from the implementation in Boule. Add the functions to the API definition in `pymap3d/__init__.py` and to the list of functions in the `README.md`.
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Add two functions to new module
pymap3d/spherical.py:geodetic2sphericalandspherical2geodeticto convert betweengeocentric geodetic (latitude, longitude, altitude) and geocentric
spherical coordinates (spherical latitude, longitude, radius).
Test against equator and pole easily deduced values as well as
latitude=45 with values pre-computed from the implementation in Boule.
Add the functions to the API definition in
pymap3d/__init__.pyand tothe list of functions in the
README.md.Fixes #54