Sorry to trouble you Regina... (blush)
I googled for it. ;-)
sql code:
INSERT INTO spatial_ref_sys (srid,auth_name,auth_srid,srtext,proj4text)
VALUES
(900913,'EPSG',900913,'PROJCS["Google Mercator", GEOGCS["WGS
84",DATUM["World Geodetic System 1984", SPHEROID["WGS 84", 6378137.0,
298.257223563,
AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",
0.0, AUTHORITY["EPSG","8901"]], UNIT["degree", 0.017453292519943295],
AXIS["Geodetic latitude", NORTH], AXIS["Geodetic longitude", EAST],
AUTHORITY["EPSG","4326"]], PROJECTION["Mercator (1SP)",
AUTHORITY["EPSG","9804"]], PARAMETER["semi_major", 6378137.0],
PARAMETER["semi_minor", 6378137.0], PARAMETER["latitude_of_origin",
0.0], PARAMETER["central_meridian", 0.0], PARAMETER["scale_factor",
1.0], PARAMETER["false_easting", 0.0], PARAMETER["false_northing", 0.0],
UNIT["m", 1.0], AXIS["Easting", EAST], AXIS["Northing", NORTH],
AUTHORITY["EPSG","900913"]]','+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 [EMAIL PROTECTED]
+no_defs');
BR,
Pedro Doria Meunier
Pedro Doria Meunier wrote:
Hi Regina :)
Could you please provide the entry for the spatial_ref_sys table for
this SRID ?
Best regards,
Pedro Doria Meunier
Obe, Regina wrote:
By the way, are the Google Mercator and WGS84 systems equivalent
No they aren't. I think Google is a mercator meter projection (not good
for measurement though but more or less good for presentation) and they
use WGS84 datum when accepting data. I think it actually has an
official SRID (could be wrong)
that is EPSG:900913
and proj4 looks like this
+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 [EMAIL PROTECTED] +no_defs
People usually plot WGS84 longlat (4326) on Google Maps, thus the
confusion.
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