[postgis-users] USGS NED Dataset

[Paragon Corporation]

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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