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<font face="Arial">There's also a program called TopoFusion (
<a class="moz-txt-link-abbreviated" href="http://www.topofusion.com">www.topofusion.com</a> ), which downloads USGS maps (as seamless tiles) in
real time from Terraserver, and allows you to edit/manipulate the maps
in much the same way as TOPO! The cost for the program is less than
that of a single TOPO! state series, but the 1:24,000 map data is
generally identical, and the TopoFusion coverages are unlimited. <br>
<br>
One of the real highlights with TopoFusion is the ability to overlay
map data with aerial imagery, so you can see how the map would
correspond with "reality" in the field. This is an extremely useful
feature for planning your own routes, where reality might otherwise be
a big unknown. The air survey images are also consistently robust - on
par with the high resolution satellite imagery featured only on some
parts of the Google Earth virtual globe. The 3D terrain viewer in
TopoFusion is also superior to TOPO!'s, imo. <br>
<br>
That said, I use both TopoFusion and TOPO! Each program has strengths
and weaknesses. TOPO! offers more in the way of map content
customization: graphics, editing tools, printing options, and the like.
But for purposes of exploration, recon, and random virtual wandering,
TF is hard to beat.<br>
<br>
- blisterfree<br>
</font><br>
Jonathan Ley wrote:
<blockquote cite="mid:481B71D3.1060503@phlumf.com" type="cite">
<pre wrap="">The DeLorme CD set is based on vector data - the maps are re-drawn each
time you look at them, so fine details like a bend in a river or road
will come out looking like jagged approximations when you zoom-in.
They're good for general overviews, but not nearly as detailed as the NG
maps for serious navigation. The NG maps are actual scans of the USGS
quads, so they're much more detailed.
-Jonathan
Garret Christensen wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Is anybody familiar with DeLorme's Topo USA software? (<a class="moz-txt-link-freetext" href="http://shop.delorme.com/OA_HTML/DELibeCCtdItemDetail.jsp?item=27525§ion=10050">http://shop.delorme.com/OA_HTML/DELibeCCtdItemDetail.jsp?item=27525&section=10050</a>)
I'm looking to do some route planning and was planning to buy several states' worth of the Nat. Geo. Topo! CDs. I'm familiar with the Nat. Geo. stuff, but since you get one state for the same cost as the entire US with the DeLorme, I assume that DeLorme isn't as detailed. They both seem to say that they've got 1:24,000 scale maps, but I'm hoping somebody could verify my suspicion that the DeLorme will be more like their gazetteer maps and have huge useless contour intervals or something like that.
thanks,
the Onion
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