[Xastir] Maps, Maps, Maps

[Curt, WE7U]

On Thu, 16 Dec 2004, Jason Winningham wrote:

> I wrote a Perl script to do this a while back.  the results were less
> than satisfactory:  The maps were off where the sides meet by some
> scaling factor.  In one example one if the cities (including about 2/3
> of the incorporated area) appeared twice.  All roads were disjoint
> along the sides and at the top and bottom near the sides.
>
> In case anyone cares, I've attached the script.

You have to be careful with the Tigermap server, as it uses a sine
projection as I recall, which they did for speed.  It has little
distortion in the center, but increases as you get toward each edge.
Also, as you zoom out the distortion increases.  You don't want to
use Tigermaps in this manner if you're zoomed out very far.

Perhaps it'd be better to stick to one zoom level that is relatively
detailed and just snag a lot of tiles at that level.  Xastir can
take care of only displaying the tiles of interest as you zoom
in/out, so it should still be relatively fast if the tiles aren't
TOO small.

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
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