I'm just starting to play with this - my quest is to get detailed national
forest boundaries onto my Garmin GPS, which led me to buy Ozi a couple weeks
ago. Seems like the only way is to trace the boundaries in Ozi. Anyway, I
found free USFS vector and raster images at 1:24000 here:

http://svinetfc4.fs.fed.us/

What follows are some notes on how I've been importing them. Feel free to
ignore if you're an experienced user. Thought it might be useful for other
newbies like me, since I burned quite a few hours figuring it out.

Raster seems to be what you want for Ozi. The files on the USFS site are
compressed in TAR format - WinZip was able to handle it without any
problems. The download will have 2 versions - uncollared is just the map,
collared has the stuff you'd normally see on the white border of a printed
topo. I've had better luck importing the uncollared maps. In Ozi, I start
with Map/Blank Map, then do File/Import Map/Single DRG Map. Got stuck on
the datum - the metadata supplied on the USFS website says "North American
Datum of 1927" - but Ozi has several NAD27 choices. The forest service maps
are based on USGS topos, and as best I can tell from digging around online,
the right answer for those is "NAD27 CONUS". As a new user I also got burnt
by the calibration thing - I would trace a boundary in Ozi, and the line I
drew would display in Ozi, but it would be an inch or two off from where I
thought I had put it. Problem solved when I calibrated using the corners of
the map - the lat/long of the corners are displayed on the collared version,
which opens in Microsoft Office Document Imaging when I double-click the
TIF.

I'd be interested to hear tips from anyone who's doing it differently.

Bill


--- In OziUsers-L@yahoogroups.com, "hrs_o1" <hrs_o1@...> wrote:
>
> Does anyone know of a source for scanned national forest maps for the
> USA?
>
> Thanks, Harold
>



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