Find nearest geographic coordinates

[Frank Muller]

I’m new to GIS field, but this module states that Euclidian distance isn’t
accurate compared to “Law of Haversines”:

https://github.com/armon/teles/blob/master/src/teles_geo_query.erl#L87-L102


/Frank

Wed 25 nov. 2020 à 22:45, Ivan Uemlianin <ivan@REDACTED> wrote:

> Hi Frank
>
> Do you want to sort the list by Euclidean distance from X?  If so, could
> you use lists:sort/2?
>
> Ivan
>
>
> On 25/11/2020 21:38, Frank Muller wrote:
> > Hi guys,
> >
> > I've a list of geographic coordinates:
> >
> > L = [ {{<<"longitude">>,6.1457}, {<<"latitude">>,46.2022}},
> >       {{<<"longitude">>,2.3387}, {<<"latitude">>,48.8582}},
> >       ... ]
> >
> > and a specific coordinate X = {{<<"longitude">>,-73.5848},
> > {<<"latitude">>,45.4995}}.
> >
> > Question: how can i find the nearest coordinates to X from L (sorted
> > from the nearest to the farest)?
> >
> > /Frank
>
> --
> ============================================================
> Ivan A. Uemlianin PhD
> Llaisdy
>
> Ymchwil a Datblygu Technoleg Lleferydd
> Speech Technology Research and Development
>
>                      ivan@REDACTED
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