[postgis-users] distance between two POINTM

[Michael Fuhr]

On Sun, May 13, 2007 at 03:04:39PM -0600, Michael Welter wrote:
> select distance_sphere(GeomFromEWKT('SRID=4269;POINTM(-105.32395 
> 39.50163 2563)'),GeomFromEWKT('SRID=4269;POINTM(-105.30166 39.53806 
> 2487)'));

These points appear to be along US285 in the vicinity of Conifer, CO.
Might your GPS be measuring driving distance instead of straight-line
distance?

-- 
Michael Fuhr