[udig-devel] Transformation/Reprojection

[Jody Garnett]

Sunburned Surveyor wrote:
> We were discussing options for reprojection/transformation code on the
> OpenJUMP development list the other day. I know that UDig offers on
> the fly reprojection, which is why I'm currently trying to download it
> and get it running.
>
> I was curious, is the ,low-level reprojection code something UDig gets
> from the GeoTools library, or is it code unique to UDig? Does the
> low-level reprojection code work with GeoTools features, or does it
> transform individual coordinates? Is it possible to access the API for
> transformation of individual coordinates?
>   
It is from the GeoTools library; you can use the "referencing module" 
with out depending on any GeoTools feature stuff. It is suitable for 
OpenJUMP etc...

Since this question is asked every couple of months by a jump developer 
it has made its way into the geotools user guide:
- http://docs.codehaus.org/display/GEOTDOC/Welcome+to+JUMP+Developers
> It seems to me that it would make sense to share reporojection code
> between OpenJUMP and UDig, especially if we can transform individual
> coordinate and don't need to deal with the feature model problem.
>   
Yes it makes sense to share; interfaces via geoapi and implementation 
via geotools, and hopfully swing widgets and swt widgets as well ;-)

Don't worry about stealing worry about forking; if you see anything you 
want out of udig lets make sure we can place it in a common library so 
we can share maintence cost.

Cheers,
Jody