Hi Jukka, Thanks for your response; do you mean to set the default resampling method in the mapfile? Setting the resampling method in the WCS request does not work (for both GET and POST requests):
POST: <?xml version="1.0" encoding="UTF-8"?> <wcs:GetCoverage xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation="http://www.opengis.net/wcs/2.0 http://schemas.opengis.net/wcs/2.0/wcsAll.xsd" xmlns="http://www.opengis.net/wcs/2.0" xmlns:wcs="http://www.opengis.net/wcs/2.0" xmlns:wcscrs="http://www.opengis.net/wcs/crs/1.0" xmlns:scal="http://www.opengis.net/wcs/scaling/1.0" xmlns:int="http://www.opengis.net/wcs/interpolation/1.0" service="WCS" version="2.0.1"> <wcs:CoverageId>ahn3_05m_dsm</wcs:CoverageId> <wcs:DimensionTrim> <wcs:Dimension>x</wcs:Dimension> <wcs:TrimLow>196396.75</wcs:TrimLow> <wcs:TrimHigh>196396.75</wcs:TrimHigh> </wcs:DimensionTrim> <wcs:DimensionTrim> <wcs:Dimension>y</wcs:Dimension> <wcs:TrimLow>450031.75</wcs:TrimLow> <wcs:TrimHigh>450031.75</wcs:TrimHigh> </wcs:DimensionTrim> <wcs:format>image/tiff</wcs:format> <wcs:Extension> <int:Interpolation> <int:globalInterpolation>NEAREST</int:globalInterpolation> </int:Interpolation> </wcs:Extension> </wcs:GetCoverage> GET: https://geodata.nationaalgeoregister.nl/ahn3/wcs?service=WCS&Request=GetCoverage&version=2.0.1&CoverageId=ahn3_05m_dsm&format=image/tiff&subset=x(196396.75,196396.75)&subset=y(450031.75,450031.75)&INTERPOLATION=NEAREST Both POST and GET request fail with the same error: "msImageCreate(): Image handling error. Attempt to allocate raw image failed, out of memory." Cheers, Anton ________________________________ From: Rahkonen Jukka (MML) <jukka.rahko...@maanmittauslaitos.fi<mailto:jukka.rahko...@maanmittauslaitos.fi>> Sent: Monday, April 6, 2020 5:26 PM To: Bakker, Anton <anton.bak...@kadaster.nl<mailto:anton.bak...@kadaster.nl>>; mapserver-users@lists.osgeo.org<mailto:mapserver-users@lists.osgeo.org> <mapserver-users@lists.osgeo.org<mailto:mapserver-users@lists.osgeo.org>> Subject: Re: WCS GetCoverage request one by one pixel Hi, Could you have a try with the default resampling "nearest"? And then also with subset having lower limit equal to upper. Now it fails, I tried already. https://geodata.nationaalgeoregister.nl/ahn3/wcs?service=WCS&Request=GetCoverage&version=2.0.1&CoverageId=ahn3_05m_dsm&format=image/tiff&subset=x(196396.75,196396.75)&subset=y(450031.75,450031.75) GetCoverage trim with equal low and high has at least worked in the past, see http://osgeo-org.1560.x6.nabble.com/Why-WCS-2-0-1-slice-is-not-supported-td5343277.html It should be OK by the WCS standard because all intersected pixels should be included and in this case the intersection is a single pixel. But see also https://osgeo-org.atlassian.net/browse/GEOS-9553 and learn that Geoserver supports slicing but not trimming to one pixel. -Jukka Rahkonen-
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