Let's say I have a lat/lng coordinate pair. I want to determine the coordinates that would create a square mile box. The existing coordintae pair would be the top left of the box, and the coordinate ...
I've a list of a few hundred cities with their latitude/longitude. Given another location (also in lat/long) I need to find the nearest city. As I don't use any GIS, by now the obvious algorithm is ...
Given two coordinates on a digital elevation model (DEM), how do I compute the actual distance traveled between the two locations, assuming a straight line route? How will changing the resolution of ...
I wrote a method, based on this presentation, that filters points based on their proximity to a target point. I would like to write a few test case. What would be good test cases for this method? // ...
I have a a map of about 3000 polygons in ArcGIS 10. I'm looking to find the distance between each one of them. I know how to do it using the lat and long coordinates of the centroid, but I'm looking ...
I have a database with locations with its lat and long coordinates. The area of locations is quite small with lots of them quite near each other. Im using this stored procedure in my project. ...
Specifically, where can I find a database of zip codes, their lat/lon centers, and intervening "obstacles" (for example, zip codes that are geographically close but separated by the Chesapeake Bay).