[Cdt-l] route planning--DeLorme Topo CD

Jonathan Ley jonathan at phlumf.com
Fri May 2 23:56:12 CDT 2008

Thanks for the info on topofusion - hadn't heard of it. I've been 
looking for something like that, but I really need a good "export" 
option, that'll export a seamless map to a given pixel size (bigger than 
a single screen).

Anyway, there are topo overlays for google earth as well. One which 
works pretty well, is the one I've got integrated into my cdt.kml file at:
I've posted about that before... There are some screen-shots in case you 
don't want to go through the trouble to load everything... Anyway, it's 
pretty neat.

Also, you can integrate a topo overlay onto google maps, there are a few 
websites that have this integrated. The postholer.com maps use this, as 
does a local site - portlandhikers.com (click the maps link there). I 
like the google maps interface as it's really easy to scroll around and 
zoom in/out. One of the things I don't like about NG is the user 
interface... (the scroll arrows and such).

Maybe some CDT hiker could walk the trail with a camera on his head, and 
we could get a google map "street view" (trail view, I guess) of the 
whole trail. That would be a riot.


Brett wrote:
> There's also a program called TopoFusion ( www.topofusion.com ), 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.
> 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.
> 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.
> - blisterfree
> Jonathan Ley wrote:
>> 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:
>>> Is anybody familiar with DeLorme's Topo USA software? (http://shop.delorme.com/OA_HTML/DELibeCCtdItemDetail.jsp?item=27525&section=10050)
>>> 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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