[Xastir] Speed issues moving maps.

[Jason KG4WSV]

Thanks for the info, Tom.  I've looked at my DOQQs.  They don't have
collars, but they aren't regular rectangles (black triangles on the
edges), so I'd need to merge them all into one ginormous geotiff, then
warp, chop it up and convert to PNG. Oh, and then generate the .geo
files.

Based on your input and an evaluation of my spare clock cycles, I
think my maps aren't all that slow after all. :)

thanks for the info!

-Jason
kg4wsv