Google maps spatial reference system
- by JavaRocky
What is Google map's spatial reference system using when you enter a lat, long into the maps search bar?
I've found hints that it might be WGS84 but after converting to that coordinate system, nothing shows up when i paste the coordinates into the google maps search box.
I am converting from GDA MGA 56.
Sample:
Input MGA56 coords: 336301, 6253363
Expected WGS86 coords: -33.8473340793201, 151.230631835944
I get: 16834916.928327594 -4008321.1020318186
Spatial coord systems:
EPSG:28356 for MGA56
EPSG:900913 for WGS86 (google maps)
I am using geotools to do the transform:
CoordinateReferenceSystem crsMga56 = CRS.parseWKT(mga56);
CoordinateReferenceSystem crsGmaps = CRS.parseWKT(gmaps);
Coordinate coordinate = new Coordinate(336301, 6253363);
Point point = new GeometryFactory().createPoint(coordinate);
MathTransform transform = CRS.findMathTransform(crsMga56, crsGmaps);
Geometry geometry = JTS.transform(point, transform);
I know the transform is not correct, as when i use an online tool it gives me the correct coords. http://www.environment.gov.au/cgi-bin/transform/mga2geo%5Fgda.pl?east=336301&north=6253363&zone=56