[Xastir] New capability: 2008 Tiger Shapefile street maps

[Richard Polivka, N6NKO]

There are two levels that this works at, one is in the Map Chooser and 
the min/max zoom level and the other is in the .dbfawk file itself.

Map Chooser is good for not displaying, lets say "edges", when you are 
zoomed out and worried about counties only. The tweaks in the .dbfawk 
file are good for minor zoom outs where you want text for streets to 
disappear but keep the street shown.

This is a balance that requires some tweaking on your own to match your 
preferences.

73 from 807,

Richard, N6NKO

William McKeehan wrote:
> This is exactly the information that I was looking for, thanks!
>
> One thing that I notice is that when I am at a zoom level that is out pretty
> far, like 768 or so, it takes a long time for Xastir to run through all of the
> maps. Much of the map data is repressed by the dbfawk files, but Xastir still
> has to process it.
>
> Is there a way to break out each component from the files, then select max
> zoom on them in Xastir to allow Xastir to skip them at the file level?
>
> Thanks again for all of the hard work to get these looking as well as they do!
>