Hi Martin,
Good to hear from you and about the status of Apache SIS. It would make
it easier for the end users if there were license commonality.
Andy
On 27/08/18 14:13, Martin Desruisseaux wrote:
Hello Andy, Greg and all
It has dependencies on JTS, for spatial relations and distances
etc., and GeoTools, for coordinate reference system conversions.
Sorry to jump in the middle of the discussion; I would like to
introduce some elements in case they are worth consideration. An
alternative to GeoTools for coordinate operations is Apache Spatial
Information System (SIS):
http://sis.apache.org/
The use of Apache SIS would avoid the LGPL license issue. The two
libraries have similar API since I was the main author of GeoTools
coordinate reference system engine from 2002 to 2008, before I
migrated to Apache. But Apache SIS is more conformant to international
standards (for example ISO 19162 for the "Well Known Text" format), in
part because I'm a member of the expert group working on ISO 19111,
ISO 19162 and GeoAPI in the Open Geospatial Consortium and I try to
apply those standards as much as I can in Apache SIS.
Another point is that both projects implements Java interfaces
published by the Open Geospatial Consortium (OGC) in the "org.opengis"
namespace, but GeoTools uses its own fork of the OGC standard
interfaces (without renaming the packages) while Apache SIS implements
the official GeoAPI 3.0.1 release. This will cause a namespace
collision if a project has GeoTools and the standard OGC GeoAPI
interfaces together on the module path.
Apache SIS is cited by GDAL/Proj (the C/C++ library behind MapServer,
QGIS, PostGIS, etc) as a source of inspiration for the design of their
new map projection library, for which they raised a funding of
$144,000 (https://gdalbarn.com/).
If I can be of any help in the evaluation of Apache SIS for this task,
I would be glad to try.
Regards,
Martin
