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geospace-code / pymap3d

pure-Python (Numpy optional) 3D coordinate conversions for geospace ecef enu eci
https://geospace-code.github.io/pymap3d
BSD 2-Clause "Simplified" License
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ECEF2ECI #63

Open sambritton opened 2 years ago

sambritton commented 2 years ago

ECEF to ECI velocity conversion In the tests functions for ECEF/ECI validation values are taken from matlab examples. The functions use position data, but not velocity data. I found that the resulting velocity was different from that in the matlab documentation after conversion from ECEF to ECI. I convert (3832 -4024 4837) from ECEF to ECI at datetime (2019, 1, 4, 12) I expect: (-3384 -4887 4843) I get: (-3004. -4669. 4842)

Python : 3.9.0 Pymap3d : 2.9.1

scivision commented 1 year ago

the pymap3d doesn't convert velocities for ECEF2ECI