On Apr 22, 2010, at 4:49 PM, Paul Ramsey wrote:
They don't, at least for me:
postgis14=# select st_distance_spheroid(geomfromtext('POINT(0 0)',
4326),
postgis14(# geomfromtext('POINT(180 0)',4326),'SPHEROID["WGS
postgis14'# 84",6378137,298.257223563]');
st_distance_spheroid
----------------------
20037508.3427892
On this request i got as result: 19903593.3909346
on two systems:
POSTGIS="2.0.0SVN" GEOS="3.2.0-CAPI-1.6.0" PROJ="Rel. 4.7.1, 23
September 2009" LIBXML="2.7.6"
PosgreSQL 9.0.alpha 4
Mac OS X 10.5.8
POSTGIS="1.5.0SVN" GEOS="3.2.0-CAPI-1.6.0" PROJ="Rel. 4.6.1, 21 August
2008" LIBXML="2.7.3"
PostgreSQL 8.3.7
Linux Slackware 12.1
--
Olivier
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