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Re: [thredds] how to call WCS GetCoverage request?

On 5/12/2011 6:43 PM, John Maurer wrote:
Hi all,
I'm struggling with my first attempt to download a GeoTIFF using WCS from TDS. I know this requires a GetCoverage request, but I get a "File not found" error no matter what I've tried so far. GetCapabilities and DescribeCoverage work, and I already have WCS allow=true and allowRemote=true in threddsConfig.xml. The TDS logs do not say much of anything. Is there something else I need to "turn on" before GetCoverage will work?

GetCapabilities (works):

    * 
http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS&version=1.0.0&request=GetCapabilities
      
<http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS&version=1.0.0&request=GetCapabilities>


DescribeCoverage (works):

    * 
http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS&version=1.0.0&request=DescribeCoverage&coverage=water_temp
      
<http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS&version=1.0.0&request=DescribeCoverage&coverage=water_temp>


GetCoverage (all give "File not found" error):

    * 
http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS&version=1.0.0&request=GetCoverage&FORMAT=GeoTIFF&COVERAGE=water_temp&CRS=EPSG:4326&BBOX=127.529296875,-15.623036831528252,277.3828125,59.80063426102869&WIDTH=1705&HEIGHT=1034&TIME=2011-05-13T00:00:00Z&ELEVATION=0
      
<http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS&version=1.0.0&request=GetCoverage&FORMAT=GeoTIFF&COVERAGE=water_temp&CRS=EPSG:4326&BBOX=127.529296875,-15.623036831528252,277.3828125,59.80063426102869&WIDTH=1705&HEIGHT=1034&TIME=2011-05-13T00:00:00Z&ELEVATION=0>
    * 
http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS&version=1.0.0&request=GetCoverage
      
<http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS&version=1.0.0&request=GetCoverage>
    * 
http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS

Ideas? Wrong syntax? A bug?
Thanks!,
John Maurer
Pacific Islands Ocean Observing System (PacIOOS)
University of Hawaii at Manoa



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ok, if you can manage to see the actual *&#^# message that gets returned (eg use control-U in firefox or chrome) :

<?xml version="1.0" encoding="UTF-8"?>
<ServiceExceptionReport xmlns="http://www.opengis.net/ogc"; version="1.2.0">
<ServiceException code="InvalidParameterValue" locator="CRS">Request CRS [EPSG:4326] not allowed [OGC:CRS84].</ServiceException>
</ServiceExceptionReport>

anyway, removing &CRS=EPSG:4326 <http://oos.soest.hawaii.edu/thredds/wcs/pacioos/ncom/global/NCOM_Global_Ocean_Model_best.ncd?service=WCS&version=1.0.0&request=GetCoverage&FORMAT=GeoTIFF&COVERAGE=water_temp&CRS=EPSG:4326&BBOX=127.529296875,-15.623036831528252,277.3828125,59.80063426102869&WIDTH=1705&HEIGHT=1034&TIME=2011-05-13T00:00:00Z&ELEVATION=0> returns a decent looking file.

we dont actually allow any coordinate transformations, so you can have any color you want as long as its black.
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