[Talk-us] Whole-US Garmin Map update - 25-03-2010

[Dave Hansen]

On Sat, 2010-03-27 at 13:55 -0600, Val Kartchner wrote:
> Dave,
> 
> I'm a regular contributor to OSM, and a subscriber to the US mailing
> list.
> 
> I followed the link to the routable Garmin maps that you have made
> available.  I'm assuming that these are for the US since they are on the
> US mailing list.  However, the contiguous US (CONUS) goes from
> approximately -66.5 to -125.  I didn't see any of the ranges that you
> have that will go this far east in the western hemisphere.  Am I
> mistaken about the extent of CONUS?

So, this isn't the continental US that I'm talking about.  The algorithm
looks like this:

	for each garmin image...
		does it intersect a state polygon?
			If so, add it to the set

The result will be clear if you look here:

	http://garmin.na1400.info/routable.php

in the very upper-right corner.  See the few Aleutian islands that cross
180/-180 longitude?

So, the images are named a bit strangely.  The names mean:

	"This image contains all of the tiles which have middle points
	 between these two latitudes."

The end result is that I put the Aleutian island tile next to Maine.
I'm too lazy to fix it at the moment. :)

-- Dave