Stephane at this site you have some examples of Stereographic projection http://spatialreference.org/ref/?search=stereographic
If you click on an EPSG code, you'll get the link for an INSERT statement in postgis and the string for proj4. Here is an example INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 93411, 'epsg', 3411, '+proj=stere +lat_0=90 +lat_ts=70 +lon_0=-45 +k=1 +x_ If you're projection doesn't already have a epsg code you can modify these statement Steve Steve Toutant, M. Sc. Analyste en géomatique Secteur environnement Direction des risques biologiques, environnementaux et occupationnels Institut national de santé publique du Québec 945, avenue Wolfe Québec, Qc G1V 5B3 Tél.: (418) 650-5115 #5281 Fax.: (418) 654-3144 [email protected] http://www.inspq.qc.ca <[email protected]>@postgis.refractions.net Envoyé par : [email protected] 05/06/2009 11:47 AM Veuillez répondre à PostGIS Users Discussion <[email protected]> A <[email protected]> cc Objet [postgis-users] How to create a custom SRID record and proj4 text in postGIS provided I have my custom Proj4js.def Hi All, I just installed postgreSQL/postGIS. How to properly create a custom SRID record and proj4 text in postGIS? Provided I have my custom Proj4js.def (stereographic polar used for visualizing north america in my project) described as follow: Proj4js.defs["EPSG:myown"] = "+proj=stere +lat_0=90 +lat_ts=60 +lon_0=-97 +k=1 +x_0=3450000 +y_0=7450000 +ellps=WGS84 +datum=WGS84 +units=m" Regards, Stéphane ---------------------------------------- Stephane Poirier, M.Sc. Optics Physics Remote Sensing Research Professional University of Sherbrooke, QC, Canada ---------------------------------------- _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
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