They don't, at least for me:
postgis14=# select st_length_spheroid(GeomFromText('LINESTRING(0 0,180
0)',4326),'SPHEROID["WGS 84",6378137,298.257223563]')
;
st_length_spheroid
--------------------
20037508.3427892
(1 row)
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
(1 row)
On Thu, Apr 22, 2010 at 3:34 AM, Rykov Denis <[email protected]> wrote:
> Hi.
> Why these functions returns different results?
>
> st_length_spheroid(GeomFromText('LINESTRING(0 0,180
> 0)',4326),'SPHEROID["WGS 84",6378137,298.257223563]')
> &
> st_distance_spheroid(geomfromtext('POINT(0 0)',4326),
> geomfromtext('POINT(180 0)',4326),'SPHEROID["WGS
> 84",6378137,298.257223563]')
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>
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