On Mon, Mar 2, 2015 at 7:52 AM, Dries Jeroen <jeroen.dr...@vito.be> wrote:
> Quite a coincidence, I've also been wrestling with axis order last week,
> and also found that the documentation did not appear to be correct! The way
> I expect it to work is for gt-epsg-wkt to be a drop in replacement for
> gt-epsg-hsql, so no difference in axis order, I think it's confusing enough
> as it is. The original reason I personally started to use the wkt version
> is a dependency conflict with hsqldb, I also continued to use it because if
> I use Geotools for instance on Hadoop, it sometimes creates a lot of short
> living processes, and I don't want it to do this database setup. Also note
> that I generally only use a couple of predefined reference systems, so
> there's no need to have the full DB.
>
> I would also suggest that we at least try to keep the axis order
> consistent if you use the long form, as that is what most people in the OGC
> community are doing. If a major implementation like geotools/geoserver
> starts to deviate from this in certain implementations, than we're back to
> where we started in the whole axis order mess.
>
The issue is... gt-epsg-wkt has always been like this, and originally
geoserver was using it instead of gt-epsg-hsql.
When OGC started the axis order mess we were forced to switch to
gt-epsg-hsql in order to offer both orientations,
and gt-epsg-wkt was retained for those that did want a simpler setup (there
is actually more, the hsql database
contains also alternative algorithms for datum shifts that can be enabled
when you have grid files, which are not
available with the gt-epsg-wkt one, due to syntax limitations).
Actually no major program out there is using it (none of those contributing
to GeoTools at least) so as far as
we are concerned, we could just drop it, it's there only for backwards
compatibility sake
Cheers
Andrea
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