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Re: GeoDistance gives other value than SpheroidalDistance

  • To: mathgroup at smc.vnet.net
  • Subject: [mg100054] Re: GeoDistance gives other value than SpheroidalDistance
  • From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
  • Date: Fri, 22 May 2009 01:48:58 -0400 (EDT)
  • References: <gv2jg6$96l$1@smc.vnet.net>

That's because GeoDistance reports distances in meters and
SpheroidalDistance in kilometers.

It's documented BTW...

Cheers -- Sjoerd

On May 21, 5:57 am, "Karsten W." <Karsten.G.Wein... at googlemail.com>
wrote:
> Hello,
>
> after switching to Mathematica 7, I tried to eliminate calls to
> SpheroidalDistance by calls to GeoDistance.
> However, the result of GeoDistance seems to differ by a factor 1000:
>
> args = {{46.8475, 15.4453}, {47.141163, 14.661255}};
> GeoDistance @@ args
> SpheroidalDistance @@ args
>
> Any comment appreciated,
> kind regards,
> Karsten.



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