All Posts in Geographic Information Systems

May. 27th, 2013

If you want to see an awesome map, click on this! One of the interesting frontiers in web mapping is the use of the JavaScript library d3.js and how it will integrate with existing JavaScript mapping frameworks or replace them. The author of d3.js is Mike Bostock and the visualization… read the rest of the article

Posted in: Geographic Information Systems, Web Applications

Feb. 8th, 2011

GPSView Recently, we created GPSView, a free Android application to show a user the location of GPS satellites they can detect. The following post is an explanation into how the math works and provides some Java code examples of how to calculate this. In regards to GPS, it turns out… read the rest of the article

Posted in: Android, Geographic Information Systems, Java

Jan. 19th, 2011

There are times when you need to sanity check your PostGIS geometric data. The tips below help you to accomplish just that and will work with Points and Polygons. The Data In your database, the data looks like: This doesn’t mean much to most of us, so this is how… read the rest of the article

Posted in: Geographic Information Systems