Martin Tomko a écrit :
> It seems that the definition changed in epsg-hsql.jar at some stage. Is
> there any change list ublicly available where such things could be
> traced? That would help a lot!
The epsg-hsql module itself didn't changed significantly. However this module
is
bundled with a copy of the EPSG database, and this database has been upgrated
in
various releases of epsg-hsql.
There is no list of changes maintained by GeoTools. But it would be possible to
get those changes with the following steps:
* Uncompress the epsg.sql file from epsg-hsql-2.3 (for example).
* Uncompress the epsg.sql file from epsg-hsql-2.6 (for example).
* Run the "diff" Unix tool (or "fc" on DOS) on those two file.
Alternatively we can look only at the diff lines that show the version change
(I
don't remember which version was bundled in 2.3-SNAPSHOT; however I know that
in
2.5 and 2.6-SNAPSHOT this is the EPSG database version 6.12.0), Then we can
just
refer the the "README" files on the EPSG web site for a human-readeable list of
changes between differerent versions.
An other thing that may explain the behavioral difference with older GeoTools
version is that at that time, the epsg-wkt factory (which is derived from the
PostGIS database) was more intensively used in the remainder of the GeoTools
library, and epsg-hsql was often ignored.
> Would it be possible to change the
> references on the website to point people to the epsg registry rather
> then the spatialreference.org for epsg codes?
Do you have the link to the page that reference spatialreference.org? I could
update that link...
> The adherence to
> EPSG standard does not seem to be true everywhere - the geotools
> implementation of epsg:4326 is lon/lat, while epsg registry has it as
> Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east.
> UoM: degrees
In GeoTools, CRS.decode("EPSG:4326") returns lat/long as specified by the EPSG
database. However the DefaultGeographicCRS.WGS84 convenience constant is
long/lat. Adrian already spotted this possibily confusing issue. In Geotidy we
tried to improve a bit the documentation:
http://geotidy.geomatys.fr/apidocs/org/geotools/referencing/crs/DefaultGeographicCRS.html#WGS84
Martin
------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
_______________________________________________
Geotools-gt2-users mailing list
Geotools-gt2-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
