[postgis] JTS integration and OGR

Paul Ramsey pramsey at refractions.net
Wed Mar 6 13:12:08 PST 2002

Everyone is having the same bright idea at the same time. :)

The story so far. Refractions is teaming up with the University of
Victoria and Vivid Solutions on a joint research project to bring the
JTS algorithms into PostGIS. We have a grant proposal into the BC
Advanced Systems Institute. Refractions/Vivid will be providing cash and
in-kind support to the project, UVic is providing a graduate student and
academic support. In addition, it turns out that the Instituto Nacional
de Pesquisas Espaciais of Brazil has similar goals -- they would like to
see SFSQL compliance in PostGIS by the end of 2002, and are dedicating a
graduate student and other support to that goal. We have discussed
bringing the two projects together to work simultaneously on the same
codebase and same workplan. 

It sounds like you have similar goals, Ferdinando. If your timeline is
consistent with ours (kicking off at the beginning of the summer
semester) perhaps you would be interested in being involved in the

I will be posting more information about this project if our ASI
proposal is accepted.


Ferdinando Villa wrote:
>         I'm considering porting the core algorithms of JTS 1.1 to C++ to
> implement the spatial layer of my Integrating Modelling Architecture
> (prehistoric docs at http://www.integratedmodelling.org) and related
> projects. I would like the result to be compatible with both OGR and
> postgis - arguably a sound move for open source, plus I use OGR already
> and need the spatial operators. I've seen the JTS issue come up for
> Postgis, though, and I wonder whether JTS porting efforts are already
> underway, or anyone has suggestions on how to maximize the benefits.
> What do the postgis folks think? I'm keeping Frank Warmerdam in the loop
> too - since JTS uses a plug-in precision model, I think we'll need an
> intermediate layer of abstraction over the geometry classes anyway, but
> I might be wrong. Any pointers appreciated.

     | Paul Ramsey
     | Refractions Research
     | Email: pramsey at refractions.net
     | Phone: (250) 885-0632

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