Welcome and thanks for your interest in Overflown Countries.
This web application is the result of a sub-project which is part of the more global one called GMapify. Feel free to explore this website full of maps and geodata. Maybe you could find other interesting stuff ;)

Olivier G.

 

NEW on the blog (July 23th, 2010): Create tiled heat maps with PHP and GD

#0.9
:initial release

#1.0
Changed:layout

#1.1
Added:country colorization

#1.2
Added:retries if connection timeout
Corrected:Refresh of Dynamic table in IE

#1.3
Added:scrollbar in sidebar
Changed:new icons

#2.0
Changed:fullscreen layout

#2.1
Changed:XHTML 1.0 Strict compliant

#2.2
Changed:cleaner source code
Added:no country code checking

#2.3
Changed:country coordinates web service used

#2.4
Changed:template use

#What is this application?

OverflownCountries is a tool for people who want to known which countries they overfly to go from one point on Earth to another following the great circle. This path is more or less the route taken by planes between two airports.

#How OverflownCountries works?

It uses 2 API provided by Google Maps and Geonames. It's a pure client side application made with HTML, Javascript and CSS. Airports data comes from this home made xml file (HT Wikipedia!). Flags are provided by crwflags.com. World Countries as polylines are encoded in specific files (see the algorithm). All files are freely available in a zipped package (raw data come from the Google Earth Community and have been processed thanks to PolylineEncoder.js). If you are interested in using them, see this code.