[OSGeo-Discuss] Any projects dealing with spatial joins?

Noli Sicad nsicad at gmail.com
Wed Jun 29 15:47:46 PDT 2011

"SharpMap is an easy-to-use mapping library for use in web and desktop
applications. It provides access to many types of GIS data, enables
spatial querying of that data, and renders beautiful maps. The engine
is written in C# and based on the .Net 2.0 framework. SharpMap is
released under GNU Lesser General Public License."


It has support for Spatialite - SQLite Spatial extension.


Spatialite Cookbook


On 6/30/11, Steve Stanton <sstanton at btinternet.com> wrote:
> I'm looking for a project that I could contribute to as a C# (maybe Java)
> developer.
> In particular, I'm looking for something that focuses on ways to perform
> flexible spatial joins with some degree of efficiency. The simplest case I'm
> thinking of is where someone picks 2 or more database tables (associated
> with location), and asks to see a combined table. No maps involved, just
> tables (with the overlapping ground area thrown in if we're dealing with a
> polygon/polygon overlay).
> A more complex case would be a situation where someone wants to  isolate an
> area based on the attributes in database tables, but doesn't have any
> advance idea of where to start looking. For example, I'm looking for a
> combination of A+B+C that covers at least 1000 hectares, but I'm starting
> with a database that covers the whole world. So to obtain some measure of
> efficiency, it would presumably be nice to have access to
> relatedgeneralizations of the location data.
> Is anyone working on this sort of thing?
> Steve

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