[Xastir-Dev] I'm adding support for maps.aprsworld.net

[James Jefferson]

List- I'm adding support to Xastir for using maps.aprsworld.net. The web 
interface is a lot like the Tiger map server, so it isn't too difficult. The 
result will be a relatively faster internet map server that will provide the 
functionallity of having local shapefiles without needing gigabytes of them.

The difficulty I'm having is with the projections. It appears that Xastir is 
expecting a project map. But to what projection? I'm getting icons that are 
showing up wrong by a block or two. I'm drawing the map based on the left, 
right, top, and bottom variables (latitude and longitude bounding box) in the 
draw_tiger_map() function.

maps.aprsworld.net should be similar to mapblast. It is presenting an 
unprojected image. When I overlay the local shapefiles of the same data on 
top of the maps.aprsworld.net maps it looks like left to right is on the 
right scale, but up and down are totally wrong.

Thoughts?

-Jim

PS - I have a few preliminary screen shots at:

http://aprsworld.net/tmp/