Lin.ear th.inking

I just noticed this series of posts by Stephen Mather on generating medial axes of polygons by creating Voronoi diagrams on the densified...

Recently I've been working on generating surfaces from irregular sets of data observations, for thematic rendering purposes.  The data I...

FOSS4G 2011 in Denver last September was such a good time, we're going to do it all over again at FOSS4G North America 2012 !  It ...

...and what it says about you . XKCD goes geospatial!  (Happens to everything eventually...)

My name in lights once again.  If this keeps up I'm going to have to start asking for an outrageous rider ...

According to this interesting BBC page on population , the number of humans on Earth has more than doubled in my lifetime. Anyone who h...

MapQuest has a whole range of useful and freely available web services for geospatial queries .  One of these is the Open Elevation Service ...

John McCarthy, inventor of LISP, has died at age 84.  Having finally balanced his parentheses, his atoms can now be returned to the free ...

Once you understand the General Transit Feed Specification (GTFS) data model , the next step is to transform the data into a format usable ...

For my JTS talk at FOSS4G I created a couple of Wordles showing systems which use JTS and GEOS.  Here they are for posterity (and because I...

Here's some interesting background to where Google Maps came from.  Must feel pretty good to have created a revolution (slippy maps) - ...

Recently I've been doing some work with the General Transit Feed Specification (GTFS).  This is a simple data model initiated by Google...

As usual, Paul delivered a highly amusing and thought-provoking keynote at FOSS4G 2011 .  For the benefit of the hard-core twitterless, the ...

Those helpful folks at the UK Ordnance Survey have provided a fine reference Guide to Coordinate Systems in Great Britain .  It's well ...

The Twittersphere is buzzing with my latest (well, only) interview with Directions Magazine on the State of the JTS Topology Suite . Pr...

Nowadays GPS is ubiquitous in electronic gadgets (no electric toothbrush is complete without it!) GPS is a classic example of iceberg tech...

JTS 1.12 has been released, and is now available for download at SourceForge . Some highlights of this release include: Single-Sided Buffer...

ZDNet has an interesting long view on the Apple iCloud announcement. Money quote: The mobile world is moving away from the chock-full-o’-c...

It's good to see that O'Reilly is adding a Java flavour to the OSCON conference. They have a good blog post highlighting why they ...

As I predicted back in 2008 , JTS has now colonized the JavaScript ecosystem, thanks to the work of Bjorn Hartell on JSTS . At least, the p...