[postgis-users] Google Mercator and PostGIS under Ubuntu

[Frens]

Just did, but without any luck. Created fresh postgis db, but system behaves
exactly the same: faulty transform and this warning: WARNING:  transform:
-38 (failed to load NAD27-83 correction file)

Any other thoughts?

Cheers,
Frens Jan



Burgholzer,Robert wrote:
> 
> I am just guessing, but why don't you try to install a fresh PostGIS
> enabled db in the Ubuntu machine, perhaps something in the process of
> "restore" was not compatible, and hosed your translation.
> 
> HTH,
> r.b.
> 
> Robert W. Burgholzer
> Surface Water Modeler
> Office of Water Supply and Planning
> Virginia Department of Environmental Quality
> rwburgholzer at deq.virginia.gov
> 804-698-4405
> Open Source Modeling Tools:
> http://sourceforge.net/projects/npsource/
> 
> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net
> [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of
> Frens
> Sent: Wednesday, November 19, 2008 1:47 PM
> To: postgis-users at postgis.refractions.net
> Subject: [postgis-users] Google Mercator and PostGIS under Ubuntu
> 
> 
> Hi,
> 
> I am using PostGIS for a project quite succesfully until recently I
> tried
> moving applications from my Windows based development environment to a
> Ubuntu based test / demo environment. The postgis versions etc. are
> exactly
> the same: "POSTGIS="1.3.3" GEOS="3.0.0-CAPI-1.4.1" PROJ="Rel. 4.6.0, 21
> Dec
> 2007" USE_STATS". The database used on the Ubuntu machine is a restore
> of a
> backup from the windows machine. (the database is an open street map db
> for
> NL).
> 
> How ever I get some weird behaviour from the translate function on the
> Ubuntu machine. For instance if I execute the following query:
> SELECT ST_AsEWKT(
> 	ST_transform(
> 		ST_transform(
> 			GeomFromText(
> 				'POINT(5.167485 52.271499)',
> 				4326
> 			),
> 			900913
> 		),
> 		4326
> 	)
> );
> 
> on my Windows machine I get: "SRID=4326;POINT(5.16748499999999
> 52.271499)".
> Which is what I expect. However, when I execute the exact same query on
> my
> Ubuntu machine (with the same postgis / postgres / etc versions) I get:
> "SRID=4326;POINT(8.10187206703149e-07 8.19541802859524e-06)". The only
> qlue
> I have is that I get this warning: WARNING:  transform: -38 (failed to
> load
> NAD27-83 correction file).
> 
> So far googling didn't pay off... Anyone got some ideas?
> 
> P.S. 900913 is the SRID I use for the Google projection system, with the
> following data in spatial_ref_sys: 
> 
> srtext =
> "PROJCS["Google Mercator",GEOGCS["WGS 84",DATUM["World Geodetic System
> 1984",SPHEROID["WGS
> 84",6378137,0]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433]]
> ,PROJECTION["Mercator_2SP"],PARAMETER["standard_parallel_1",0],PARAMETER
> ["central_meridian",0],PARAMETER["false_easting",0],PARAMETER["false_nor
> thing",0],UNIT["Meter",1],EXTENSION["PROJ4","+proj=merc
> +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0
> +units=m
> +nadgrids=@null +wktext  +no_defs"]]"
> 
> proj4text =
> "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0
> +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs"
> -- 
> View this message in context:
> http://www.nabble.com/Google-Mercator-and-PostGIS-under-Ubuntu-tp2058529
> 5p20585295.html
> Sent from the PostGIS - User mailing list archive at Nabble.com.
> 
> _______________________________________________
> postgis-users mailing list
> postgis-users at postgis.refractions.net
> http://postgis.refractions.net/mailman/listinfo/postgis-users
> _______________________________________________
> postgis-users mailing list
> postgis-users at postgis.refractions.net
> http://postgis.refractions.net/mailman/listinfo/postgis-users
> 
> 

-- 
View this message in context: http://www.nabble.com/Google-Mercator-and-PostGIS-under-Ubuntu-tp20585295p20596177.html
Sent from the PostGIS - User mailing list archive at Nabble.com.