[R-sig-Geo] distance units in "zerodist" function (sp)
edzer.pebesma at uni-muenster.de
Thu Jun 27 07:35:10 CEST 2013
Good point, thanks!
zerodist computes Euclidian distances, meaning you should use have
projected coordinates to do something useful at the poles.
I'll put it on the TODO list to compute great circle distances when data
are in long lat, hopefully for the next sp, which might come out pretty
On 06/27/2013 05:17 AM, Parra, Mauricio (AGPM) wrote:
> Hi everyone,
> I would like to know how the distance for "zero" parameter in
> zerodist/remove.duplicates function (sp package) should be entered when
> coordinates for SpatialPoints are in lat/long. Function documentation has
> no mention about you have to use either map units (decimal degrees for lat/long)
> or in all cases meters.
> Thanks in advance,
> R-sig-Geo mailing list
> R-sig-Geo at r-project.org
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