<div dir="ltr">Hi,<div><br></div><div>This page <a href="https://viewer.nationalmap.gov/services/">https://viewer.nationalmap.gov/services/</a> includes a link under "WCS Services" that lists a number of subdatasets.  This command </div><div><br></div><div><font face="monospace">gdalnfo "<a href="https://elevation.nationalmap.gov/arcgis/services/3DEPElevation/ImageServer/WCSServer?request=GetCapabilities&service=WCS">https://elevation.nationalmap.gov/arcgis/services/3DEPElevation/ImageServer/WCSServer?request=GetCapabilities&service=WCS</a>"</font></div><div><br></div><div>works fine.  I have been retrieving elevation data from the first subdataset:</div><div><br></div><div><font face="monospace">  SUBDATASET_1_NAME=WCS:<a href="https://elevation.nationalmap.gov:443/arcgis/services/3DEPElevation/ImageServer/WCSServer?version=2.0.1&coverage=DEP3Elevation">https://elevation.nationalmap.gov:443/arcgis/services/3DEPElevation/ImageServer/WCSServer?version=2.0.1&coverage=DEP3Elevation</a><br>  SUBDATASET_1_DESC=DEP3Elevation</font><br></div><div><br></div><div>and most of the time it works but I think I must be doing something wrong since sometimes there are large missing areas.</div><div><br></div><div>For instance this area (Boston) works just fine:</div><div><br></div><div><font face="monospace">gdal_translate "WCS:<a href="https://elevation.nationalmap.gov:443/arcgis/services/3DEPElevation/ImageServer/WCSServer?version=2.0.1&coverage=DEP3Elevation">https://elevation.nationalmap.gov:443/arcgis/services/3DEPElevation/ImageServer/WCSServer?version=2.0.1&coverage=DEP3Elevation</a>" test.tif -projwin -71.07 42.36 -71.03 42.33 -projwin_srs EPSG:4326 -tr 100 100</font><br></div><div><font face="monospace"><br></font></div><div><font face="arial, sans-serif">but this command with only a different "projwin" (in Colorado) is about 75% missing:</font></div><div><br></div><div><font face="monospace">gdal_translate "WCS:<a href="https://elevation.nationalmap.gov:443/arcgis/services/3DEPElevation/ImageServer/WCSServer?version=2.0.1&coverage=DEP3Elevation">https://elevation.nationalmap.gov:443/arcgis/services/3DEPElevation/ImageServer/WCSServer?version=2.0.1&coverage=DEP3Elevation</a>" test.tif -projwin -107.03 37.28 -107 37.25 -projwin_srs EPSG:4326 -tr 100 100</font><br></div><div><font face="monospace"><br></font></div><div><font face="arial, sans-serif">Can anyone help me understand what I'm doing wrong here and how to fix it?  </font></div><div><font face="arial, sans-serif"><br></font></div><div><font face="arial, sans-serif">I am using a very recent OSGeo4W featuring </font>GDAL 3.0.4, released 2020/01/28.</div><div><br></div><div>Thanks very much for your help,</div><div><br></div><div>carl</div></div>