[postgis-users] ST_length_spheroid and ST_distance_spheroid

[Olivier Courtin]

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