The Way Points Database
I had to find a way to represent the Earth in terms of numeric data. This was long before Geographic Information Systems and databases became generally available. The purpose at hand did not require a high degree of resolution or detail. The marking of coastlines was unnecessary. I decided to build my geographic data model of the Earth entirely of way points placed on a true sphere. Nothing more would be gained by representing the Earth as a distorted ellipsoid with land relief and oceanic bulges.
I conveniently found a world-wide listing of 11,000 cities and major geographical features together with their co-ordinates in the back of my daughter's school atlas. As I was going to use the data for experimental purposes only and not for commercial gain I decided that it would be permissible to use it. Entering this list was a long and boring job. I entered the names and co-ordinates 10 at a time in odd sessions over a long period. This is the Earth model used as the basis for this Moving Map project.
Parent Document |
© 1997 Robert John Morton