[postgis-users] USGS NED Dataset

[Eli Adam]

   5. Re: USGS NED Dataset (Stephen Woodbridge)

------------------------------

I haven't done it myself, but a friend got a lot of data by mailing external hard drives.  He might have gone through this email: bulkdatainfo at usgs.gov listed here:  http://ned.usgs.gov/Ned/faq.asp#DATA

Bests, Eli

Date: Fri, 20 Aug 2010 12:36:42 -0400
From: Stephen Woodbridge <woodbri at swoodbridge.com>
Subject: Re: [postgis-users] USGS NED Dataset
To: PostGIS Users Discussion <postgis-users at postgis.refractions.net>
Message-ID: <4C6EAF1A.3060103 at swoodbridge.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

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.

-Steve

On 8/19/2010 2:03 AM, Paragon Corporation wrote:
> Steve,
>
> Yes it can.  You would use gdal2wkraster.py  packaged with WKT Raster to
> load the data in.  You'll need working GDAL and Python  2.5 (I think 2.6
> works as well now though haven't tried with 2.6).
>
>  From there you should be able to use the ST_Intersects functions to cross
> join your geometries with the elevation data.
>
>
> Pierre has a tutorial here covering some exercises with elevation data.
>
> http://trac.osgeo.org/postgis/wiki/WKTRasterTutorial01 
>
> The last chapter of our book covers various exercises in loading different
> types of raster data and working with geometry/raster together.
> http://www.postgis.us/chapter_13 
>
>   We are in the middle of updating that since some things have been
> added/simplified since we last updated it.
>
> Thanks,
> Leo and Regina
> http://www.postgis.us 
>
>
>
>
> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net 
> [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Stephen
> Woodbridge
> Sent: Wednesday, August 18, 2010 4:36 PM
> To: PostGIS Users Discussion
> Subject: [postgis-users] USGS NED Dataset
>
> Hi all,
>
> Any thoughts on loading and using the USGS NED data set with postgis?
>
> My goal would be to take something like the Tiger Street data and augment
> that with elevation data for the Z values.
>
> Does the new raster support facilitate doing this?
> Has anyone already done this or can someone describe the process?
>
> Thanks,
>     -Steve
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