Maps: October 2011 Archives
An amazing collection of database lookups, covering phone numbers, email, zip codes and statistics, address verification, maps, and much more.
Migrations Map: Where are migrants coming from? Where have migrants left?
Interactive HTML5 map. Click a country and see the top 10 sources for immigrants and the top 10 destinations for emigrants. Migrants are defined as people born in one country now residing in another, so these numbers are cumulative.
Ordnance Survey: A Guide to Coordinate Systems in Great Britain
Appendix B explains how to convert between earth centered earth fixed (ECEF) cartesian coordinates and ellipsoidal latitude, longitude, and height.
