[gdal-dev] gdallocationinfo + WCS question...

Thu Oct 21 11:16:48 PDT 2021

Hi,

At least it seems to work with our WCS service

gdallocationinfo WCS:https://beta-karttakuva.maanmittauslaitos.fi/wcs/service/ows?version=2.0.1&coverage=korkeusmalli__korkeusmalli -wgs84 27 68
Report:
  Location: (228000P,119567L)
  Band 1:
    Value: 303.463989257812

-Jukka Rahkonen-

Lähettäjä: gdal-dev <gdal-dev-bounces at lists.osgeo.org> Puolesta Carl Godkin
Lähetetty: torstai 21. lokakuuta 2021 18.47
Vastaanottaja: gdal-dev at lists.osgeo.org
Aihe: [gdal-dev] gdallocationinfo + WCS question...

Hi,

I am trying to use gdallocationinfo to query point locations from a WCS server and not having any luck. I don't see anything in the docs that says this is unsupported but I can't make it work.

First of all, is there a better way to get an elevation from a given lat,lon using WCS?

Here's an example query using the USGS National Map server:

gdallocationinfo "WCS:https://elevation.nationalmap.gov:443/arcgis/services/3DEPElevation/ImageServer/WCSServer?version=2.0.1&coverage=DEP3Elevation" -wgs84 -122.086 42.948 --debug ON

This is a point in the middle of Crater Lake which I picked since it's flat and I know what to expect.

Anyway, looking at the debug output it appears that the program is querying for a GeoTIFF of a VERY large area and that's failing.

I actually want to do this with my own WCS server but thought it might be mis-configured somehow so I tried the USGS server.  With my own server, gdallocationinfo seems to be requesting a strange shape from the server (as I can see through the debug output).

Thanks for any help,

carl

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