[gdal-dev] Using GDAL WMS with USGS 3DEPElevationIndex

Carl Godkin cgodkin at gmail.com
Thu Jun 4 07:27:56 PDT 2020

Hi Michael,

Thanks a lot for your reply.

I managed to come up with something sort of like that by using
gdal_translate to a WMS service description file and then using that.

But I don't see how to get elevations from there.  Have you figured that
out?  I know how to get imagery, but I'm interested in elevation values.

Thanks a lot,

On Wed, Jun 3, 2020 at 5:42 PM <michael.smith.erdc at gmail.com> wrote:

> Carl,
> Try something like
> gdal_translate -f gtiff  "<GDAL_WMS><Service name=\"AGS\"><ServerUrl>
> https://index.nationalmap.gov/arcgis/rest/services/3DEPElevationIndex/MapServer</ServerUrl><BBoxOrder>xyXY</BBoxOrder><SRS>3857</SRS></Service><DataWindow><UpperLeftX>-20037508.34</UpperLeftX><UpperLeftY>20037508.34</UpperLeftY><LowerRightX>20037508.34</LowerRightX><LowerRightY>-20037508.34</LowerRightY><SizeX>2500</SizeX><SizeY>2500</SizeY></DataWindow></GDAL_WMS>"
> test1.tif -projwin  ulx uly lrx lry -projwin_srs <srs of your window>
> -t_srs <srs you want for the output>
> If you want a different size than 2500x2500 just change that size
> Michael Smith
> US Army Corps
> On Jun 3, 2020, at 8:27 PM, Carl Godkin <cgodkin at gmail.com> wrote:
> Hi,
> I'm unable to figure out how to retrieve elevation data (grids) from the
> 3DEP program's endpoints.
> Starting here:
> https://index.nationalmap.gov/arcgis/rest/services/3DEPElevationIndex/MapServer
> it would seem to be possible but I just cannot get anything back other
> than solid white images.   Most of the help from that page leads off to
> ArcGIS-land which I don't have or want to use.  And Googling for 3DEP leads
> only to more government sites that aren't helpful.
> If you have some experience with this (or a related public elevation data
> source), would you please send an example "gdal_translate" command line?
> I'd really like to figure out how to download terrain (as perhaps a
> GeoTIFF with floating point elevations) for an arbitrary CONUS lat/lon
> range.
> Thanks in advance for any help!
> carl
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