Custom filter to enable sorting by distance?

I’ll like to sort a Collection by distance to a target (lat, long). I’ve got a collection with lat long coordinates using Cartographer.

Would it be possible to create a custom filter that would calculate a distance and order the collection by that distance?

I’m new to creating addons/helpers and hoping someone may be able to point me in the right direction in terms of accessing and modifying a collection in this case. There are lots of examples explaining the Haversine formula etc, but I’m I’m not sure how to hook it up in this context.

Is a custom filter even the best approach?


>>>>>>> Unanswered <<<<<<<
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