Forum OpenACS Q&A: Response to zip code distance matrix

Posted by Gilbert Wong on
A while back, I wrote some code to calculate the distance between two zip codes (latitude and longitude coordinates from the list that Jon mentions).  I can dig it up and post it.  I just used a distance calculation formula which I got off of a website.  I think the longitude and latitude coordinates are at the center of the zip code area so it will only be an approximate calculation.