Our GeoServer layer has a Native SRS = EPSG:4283 which uses Lat/Long.
EPSG:4283 = GDA94 = Geocentric Datum of Australia 1994
The Native SRS Bounding Box has a different extent to the Lat/Lon Bounding Box.
Does anyone know why if they’re both using Lat/Long?
What are the repercussions of having different lat/long coordinates for the 2 bounding boxes?
Inna
Our GeoServer layer has a Native SRS = EPSG:4283 which uses Lat/Long.
EPSG:4283 = GDA94 = Geocentric Datum of Australia 1994
The Native SRS Bounding Box has a different extent to the Lat/Lon Bounding Box.
Does anyone know why if they’re both using Lat/Long?
What are the repercussions of having different lat/long coordinates for the 2 bounding boxes?
Inna
On Thu, Oct 17, 2013 at 7:11 AM, Inna Nogeste <I.Nogeste@anonymised.com> wrote:
**
Our GeoServer layer has a Native SRS = EPSG:4283 which uses Lat/Long.
EPSG:4283 = GDA94 = Geocentric Datum of Australia 1994The Native SRS Bounding Box has a different extent to the Lat/Lon Bounding
Box.
Does anyone know why if they're both using Lat/Long?
Because they are using different datums (the ellipsoid is no the same, and
not oriented
the same way)
What are the repercussions of having different lat/long coordinates for
the 2 bounding boxes?
None that I can think of
Cheers
Andrea
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549
http://www.geo-solutions.it
http://twitter.com/geosolutions_it
-------------------------------------------------------
Thanks Andrea, yes the different datum is what I suspected.
I am new to GeoServer - is the Lat/Lon Bounding Box in WGS84? Or which geographic projection does GeoServer use as its default?
It’s good to hear that there shouldn’t be any problems with the differences between the 2 bounding boxes as the differences are very small. Interestingly, the Min/Max X values for the 2 different bounding boxes are the same for almost all the layers but the Min/Max Y coordinates are different for nearly all the layers.
Inna
Our GeoServer layer has a Native SRS = EPSG:4283 which uses Lat/Long.
EPSG:4283 = GDA94 = Geocentric Datum of Australia 1994The Native SRS Bounding Box has a different extent to the Lat/Lon Bounding Box.
Does anyone know why if they’re both using Lat/Long?
Because they are using different datums (the ellipsoid is no the same, and not oriented
the same way)
What are the repercussions of having different lat/long coordinates for the 2 bounding boxes?
None that I can think of
Cheers
Andrea
–
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549
http://www.geo-solutions.it
http://twitter.com/geosolutions_it