[postgis-users] USGS NED Dataset

[Stephen Woodbridge]

Norman,

Awesome! this is much easier to deal with. There is no metadata with it, 
but it looks like it might be the 1 arc sec, 30m/pixel, data in a 16bit 
tiff. How do I interpret the pixel values? as meters from the ellipsoid?

Thanks,
   -Steve

On 8/20/2010 2:18 PM, Norman Vine wrote:
> FYI there is a copy of the USGS NED on a fat pipe @
>
> http://collections.sdsc.edu/dac2/telascience/telascience_data/elevation/usgs_ned/
>
>
> On Aug 20, 2010, at 1:58 PM, Mike Swope wrote:
>
>> There used to be a service called geotorrent. It'd be nice if someone
>> started that back up.
>>
>> How much data are you trying to download? You can still find some of
>> the DEMs as a file download without having to deal with the seamless
>> site.
>>
>> On Fri, Aug 20, 2010 at 10:50 AM, Ron M
>> <rm_postgis at cheapcomplexdevices.com
>> <mailto:rm_postgis at cheapcomplexdevices.com>> wrote:
>>
>>     Stephen Frost wrote:
>>     > * Stephen Woodbridge (woodbri at swoodbridge.com
>>     <mailto:woodbri at swoodbridge.com>) wrote:
>>     >> Thanks! that is exactly what I needed to know. I'm in the painful
>>     >> process of downloading the NED data from there seamless download
>>     >> application - I can not tell you how frustrating these stupid
>>     apps are.
>>     >> Just give me a simple ftp site and wget would be so much easier
>>     for the
>>     >> users.
>>     >
>>     > Sure would be nice of someone to put up the data set on an FTP
>>     (or, even
>>     > better, easily wget'd HTTP) site once they've pulled it from the
>>     USGS
>>     > site... :)
>>
>>     Or at that size, perhaps bittorrent.
>>
>>
>>
>>     Or, another potential place -- an Amazon Web Service Public Data Set:
>>     http://aws.amazon.com/publicdatasets/
>>     "Public Data Sets on AWS provides a centralized repository of
>>     public data sets that can be seamlessly integrated into AWS
>>     cloud-based applications. AWS is hosting the public data sets
>>     at no charge for the community"
>>
>>     I find their pre-loaded PostGIS open-street-map and 2008 TIGER/LINE
>>     data extremely convenient:
>>     http://developer.amazonwebservices.com/connect/kbcategory.jspa?categoryID=275
>>
>>
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