Lin.ear th.inking

Translation: Ordnance Survey and Google Maps side-by-side for planning the Land's End-John O'Groats walk in the United Kingdom. My f...

(No doubt by choosing that title I've exposed by my blog to death by spam filter. Although if the ones with titles like "Increase...

Motivated by a thread on the GEOS list about the Boost.Polygon library, I've added some new resources to the JTS web site , including: ...

The web mapping site 192.com has a very nice map zoom control which dynamically displays a representative image of the map at the prospecti...

Here's a nifty web page which shows a way of visualizing the operation of various common sorting algorithms. Sample output for Heapsort...

Well, it's obvious, innit? You can be the first to write the Wikipedia article !

I find the sequence diagram to be one of the most useful UML diagrams - but it's also one of the most fiddly & annoying to generate...

As is well-known, the Voronoi diagram (or tesselation) is the dual of the Delaunay triangulation . So the new Delaunay Triangulation code ...

The next version of JTS (1.11) will include an API for creating Delaunay triangulations and Conforming Delaunay triangulations . For a tho...

...As they explain in this blog post about using JTS to simplify a polygonal coverage. The really sweet thing is that not only do the Web M...

Here's a nifty page which shows GM and VE side-by-side, with slaved navigation. It's quite handy for seeing differences in map ren...

I just saw this blog post in rebuttal to Martin Fowler's DatabaseThaw article. It's a typically well-thought out response from Ty...

Martin Fowler has a great bliki TM post on DatabaseThaw . The soundbite is something like "What happens after relational DBs?". ...

The GEOS team is working on porting the JTS CascadedPolygonUnion algorithm. Reasonably enough they asked whether there were unit tests th...

I'm happy to announce that after a long gestation JTS 1.10 has been released. (This is my contribution to help fulfill James Fee's...

Via the OpenJUMP list comes this notice of the OGRS 2009: International Opensource Geospatial Research Symposium conference in Nantes, Fra...

Pie Charts are a nice way of displaying thematic visualization in Google Earth. They're also a good test of the chops of a KML generat...

After seeing this post on Wordle , I had to try it.... and there's no stopping at just one...

When I was but a wee nerdling, I took a course taught by a grizzled veteran of the computer industry. I can no longer remember the subject ...

Thanks to Sean I just learned about Roy Fielding's blog . I don't know why it never occurred to me that Roy Fielding would have a ...