[mapserver-users] Baffled by a MapServer WCS

[Berger, Cora]

Dear Ari,

this request works fine:
http://nsidc.org/cgi-bin/atlas_north?SERVICE=WCS&VERSION=1.0.0&REQUEST=GetCoverage&FORMAT=GeoTIFF&COVERAGE=sea_ice_concentration_01&BBOX=-3961770,-3961769,3961769,4362961&CRS=EPSG:32661&RESPONSE_CRS=EPSG:32661&WIDTH=317&HEIGHT=333

Cheers
Cora


>-----Ursprüngliche Nachricht-----
>Von: mapserver-users [mailto:mapserver-users-bounces at lists.osgeo.org] Im
>Auftrag von mapserver-users-request at lists.osgeo.org
>Gesendet: Dienstag, 14. November 2017 21:00
>An: mapserver-users at lists.osgeo.org
>Betreff: mapserver-users Digest, Vol 118, Issue 11
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>Today's Topics:
>
>   1. Baffled by a MapServer WCS (Ari Jolma)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Tue, 14 Nov 2017 11:18:16 +0200
>From: Ari Jolma <ari.jolma at gmail.com>
>To: mapserver-users at lists.osgeo.org
>Subject: [mapserver-users] Baffled by a MapServer WCS
>Message-ID: <b8c3d8bf-13ae-0f56-a163-06d57487679d at gmail.com>
>Content-Type: text/plain; charset=utf-8; format=flowed
>
>Hi,
>
>I'm trying to get the GDAL WCS client working and in the process trying
>different WCS servers.
>
>I just found this http://nsidc.org/cgi-bin/atlas_north and I'm trying to
>use its WCS
>
>I'm making WCS 1.0 and 1.1 GetCoverage calls on a dataset that seems to
>be natively served in EPSG:32661:
>
>http://nsidc.org/cgi-
>bin/atlas_north?SERVICE=WCS&REQUEST=GetCoverage&VERSION=1.0.0&CO
>VERAGE=sea_ice_concentration_01&FORMAT=GeoTIFF&BBOX=-
>3961770.085,4312961.971,-
>3911770.085,4362961.971&WIDTH=2&HEIGHT=2&CRS=EPSG:32661
>
>Error: Requested BBOX
>(-5336721.37969822,2086027.77164232,-5316625.78536214,2109378.29356774)
>is outside requested coverage BBOX
>(-3961770.085,-3961769.906,3961769.894,4362961.971)
>
>http://nsidc.org/cgi-
>bin/atlas_north?SERVICE=WCS&VERSION=1.1.1&REQUEST=GetCoverage&IDE
>NTIFIER=sea_ice_concentration_01&FORMAT=image%2Ftiff&BOUNDINGBOX=-
>3924270.085,4350461.971,-
>3949270.085,4325461.971,urn:ogc:def:crs:EPSG::32661&RangeSubset=pixels&WI
>DTH=2&HEIGHT=2&GridBaseCRS=urn:ogc:def:crs:EPSG::32661&GridCS=urn:ogc
>:def:cs:OGC:0.0:Grid2dSquareCS&GridType=urn:ogc:def:method:WCS:1.1:2dGridIn
>2dCrs&GridOrigin=-3949270.085,4350461.971&GridOffsets=25000,25000
>
>Requested BBOX
>(-5335202.686558,2107853.71031472,-5335202.686558,2107853.71031472) is
>outside requested coverage BBOX
>(-3961770.085,-3961769.906,3961769.894,4362961.971)
>
>For the first one I'm making a fix on the GDAL side for the grid origin
>not being at the center of a pixel and for the second one I'm setting
>the offsets to positive values and leaving out the 0,0 in the middle.
>For the 2nd one I'm also making axis order inversion since EPSG::32661
>is N,E. That's why the GridOrigin in like it is. I'm not sure whether
>MapServer applies axis inversion in the 1.1 in this case.
>
>Anyway, the baffling thing is that MapServer reports in both cases the
>requested BBOX (the one I'm sending, I guess) to be outside coverage
>BBOX and changed from what I sent -- there is obviously a reprojection
>done. The values are strange and I can't find/think in what CRS they are.
>
>Any ideas?
>
>Thanks,
>
>Ari
>
>
>
>
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>End of mapserver-users Digest, Vol 118, Issue 11
>************************************************