[postgis-users] Transform from NAD27 (SRID 4267) to WGS84 (SRID 4326)

Frank Warmerdam warmerdam at pobox.com
Mon Apr 2 20:04:41 PDT 2012


On Mon, Apr 2, 2012 at 7:53 PM, Evan Martin
<postgresql at realityexists.net> wrote:
> When trying to transform from NAD27 (SRID 4267) to WGS84 (SRID 4326) some
> points used to fail as of 2.0.0 beta 3 (bug 318). I've just tried 2.0.0 RC 2
> and they now return the input value unchanged, eg.
>
> SELECT ST_AsText(ST_Transform(ST_GeomFromEWKT('SRID=4267;POINT(-70 10)'),
> 4326))
>

Evan,

70 west, 10 north is in venezuela which is outside the bounds of
available NAD27 to NAD83 conversion files.  Try (-120 40).

Best regards,
-- 
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Software Developer



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