[gdal-dev] OGR distance different than in ArcGIS

Hare, Trent thare at usgs.gov
Wed Mar 6 16:51:56 PST 2013

   Unless your neighbors are very localized (in an undistorted projection),
I would recommend using some geodesic methods (in ArcMap or OGR).

For ArcMap, you can beat this free add-on (Tools for Graphics and Shapes)
which does geodesic lengths, areas, and azimuths no matter the input
http://www.jennessent.com/arcgis/shapes_graphics.htm (very
good documentation)

For OGR, I would recommend running the lat/lon pairs through or Haversine
or Vincenty's equations.

Good luck,

On Wed, Mar 6, 2013 at 5:33 PM, Uli Strötz <ustroetz at gmail.com> wrote:

> Thanks for your answers. I tried number two and the files are projected in
> Albers (meters) (see attachment). The results are still the same as being
> unprojected. Is there a way to tell GDAL to only use the Projected
> Coordinate System instead of the CRS?
> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
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