DEM's are huge and full of errors. Better to apply some on-the-fly
compression to the 3 ARC Second Terrain Elevation Data. This would
result in the best speed to resolution ratio.
For *most* amateur work, 30m, 100m or 1 ARC Second data would impose
too much storage and horsepower limitations.
jk
On Thu, 27 Jan 2000, Mike Werner wrote:
> On Wed, Jan 26, 2000 at 03:15:17PM -0500, Hast, Chuck wrote:
> > I for one would certainly be interested, we have where I work a
> > windows based software package that cost about $8k with the
> > whole 1 second database for the USA, PR and HI. I do not know
> > if you can use the tiger data base which is provided by the US
> > gov. or what you would use for the topo data, but I would really
> > be interested in such work
>
> You're talking about downloadable topographic information? If so:
> http://edc.usgs.gov/doc/edchome/ndcdb/ndcdb.html
> The USGS has available a file type called DEM (Digital Elevation Model)
> that can be used to generate topo maps. Dad uses 'em all the time - but
> he uses Windoze. I do remember seeing some Linux stuff that could use
> DEM's - kept meaning to grab one and give it a whirl.
>
> There's a few other file types available on that site as well - but I
> don't know what they are. I can try and pick Dad's brain about 'em
> next chance I get, if this seems to be the type of thing you're looking
> for.
> --
> Mike Werner KA8YSD | "Where do you want to go today?"
> ICQ# 12934898 | "As far from Redmond as possible!"
> '91 GS500E |
> Morgantown WV | Only dead fish go with the flow.
--
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James S. Kaplan KG7FU
Eugene Oregon USA
[EMAIL PROTECTED]
http://www.rio.com/~kg7fu
ICQ # 1227639
Have YOU tried Linux today?
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