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Subject:  Re: National Geographic TOPO Software |
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Author: Pathfinder |
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Date Posted: 21:22:31 02/10/04 Tue In reply to: kursch 's message, "National Geographic TOPO Software" on 14:25:59 02/10/04 Tue >When using a GPS, how accurate are the fixes based on >real world location? As long as you use the same map datum for the GPS and Map, they are pretty accurate. We have actually used them to map an expedition on the White Pine Trail, and publish maps of the trail. They were right on target. If you use different datums, then you could be up to 200 meters off. >Do the maps show any compression smudging from when >the images were scanned like some web based products? Not bad. Much better than Topozone. They have great resolution, and the maps sometimes are a few meters off. This is only because some of the USGS Topos are in WGS84 and some are in NAD27, (again the Datum/Conic Projection things. >How well do the edges line up from multiple sheets? Not completely "seamless" but hardly noticable. I use it a lot. All the team's maps are made with this program, and it does a great job. The adventure paper works great. I demonstrated it at our land navigation class, by putting the map under a faucet for about 5 seconds, no smudging, no damage, etc. I have seem "adventure paper" maps in Nalgene bottles for up to 6 months and they held up pretty well. The only problem is the adventure paper averages about $1 per sheet, (pretty expensive!). You can definitely use the maps in a rain storm or on a wet kayaking trip without any problem. For $99 you get a lot of bang for your buck. Just make back up discs. After 3 years, mine is starting to degrade from scratches,etc. It beats topos usa hands down, because of all the features on the maps, etc. It also beats web based stuff like topozone, because it is much more powerful and has the GPS features. Our White Pine trail maps are done with a GPS and the Nat Geo Topo program. Hope that helps. Pathfinder >Anyone have any experience with this software. It >boats "seamless" USGS 7.5' coverage of the entire >state from scanned topo quads. It also says it can do >uploads and downlaods from GPS units. You can also get >special "adventure paper" which is plasic map paper >for inkjet printers so yo can print your own custom >topos. > >Does anyone have this software and how does it work. > >When using a GPS, how accurate are the fixes based on >real world location? > >Do the maps show any compression smudging from when >the images were scanned like some web based products? >How well do the edges line up from multiple sheets? > >All in all, how useful is it. It seems like a good >idea, but then agin so was the car/boat/airplane you >could keep in your garage and drive to work... > >ak [ Next Thread | Previous Thread | Next Message | Previous Message ] |
| Subject | Author | Date |
 Re: National Geographic TOPO Software | kursch | 11:01:41 02/11/04 Wed |
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 Re: National Geographic TOPO Software | kursch | 12:25:57 02/12/04 Thu |
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