Can now use local ephemeris file

nanograv / PINT

PINT is not TEMPO3 -- Software for high-precision pulsar timing

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Can now use local ephemeris file #1831

Closed dlakaplan closed 3 months ago

dlakaplan commented 3 months ago

I think there was an intent to allow this a while ago, but the mechanism appeared broken and not uniformly implemented (#1830). This PR should solve that:

A small fix to solar_system_ephemeris._load_kernel_local() to actually properly load the files
A persistent dictionary so that once loaded (locally), PINT will not attempt to re-load the same file
Tests for this
A small addition to explanation.rst explaining how to use a local file

dlakaplan commented 3 months ago

See https://nanograv-pint--1831.org.readthedocs.build/en/1831/explanation.html#ephemerides

abhisrkckl commented 3 months ago

This looks good. Shall I merge this?

dlakaplan commented 3 months ago

I think so. Note that I was unable to get the dictionary working properly for downloaded files, but since those are handled by astropy I don't think it's needed. So I think this is ready.