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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">There are lots of good reading in the WCS section of OGC standards http://www.opengeospatial.org/standards/wcs. Subsetting
that is used for BBOX-alike queries is explained in the core. There are also WCS 2.0 KVP examples in
<a href="https://www.mapserver.org/ogc/wcs_server.html">https://www.mapserver.org/ogc/wcs_server.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Clip in native CRS and without interpolation (effectively the same as nearest because every pixel match) is the main use
case for WCS 2.0 core service. You can test with this and get a subset of a DEM coverage<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><a href="https://beta-karttakuva.maanmittauslaitos.fi/wcs/service/ows?service=WCS&version=2.0.1&request=GetCoverage&CoverageID=korkeusmalli_2m&SUBSET=E(496000,500000)&SUBSET=N(7181000,7185000)&format=image/tiff"><span lang="EN-US">https://beta-karttakuva.maanmittauslaitos.fi/wcs/service/ows?service=WCS&version=2.0.1&request=GetCoverage&CoverageID=korkeusmalli_2m&SUBSET=E(496000,500000)&SUBSET=N(7181000,7185000)&format=image/tiff</span></a></span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Save the response on disk and compare what gdalinfo shows about the image with how the coverage is defined in DescribeCoverage<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">-Jukka Rahkonen-<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">Lähettäjä:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> mapserver-users [mailto:mapserver-users-bounces@lists.osgeo.org]
<b>Puolesta </b>Rousseau Lambert2, Louis-Philippe (EC)<br>
<b>Lähetetty:</b> 13. marraskuuta 2018 15:35<br>
<b>Vastaanottaja:</b> mapserver-users@lists.osgeo.org<br>
<b>Aihe:</b> [mapserver-users] WCS 2.0 request without interpolation<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p>Hi guys, <o:p></o:p></p>
<p class="MsoNormal">Do you know if it's possible to do a WCS 2.0 request without interpolation, like simply clip the original file on it's native grid?<br>
<br>
I know that there is the <strong>INTERPOLATION </strong>parameter for WCS, but the only possible values are “NEAREST”, “BILINEAR” and “AVERAGE”. And I don't see a way using wcs keywords in the mapfile to add or modify the interpolation options...<br>
<br>
I get that for this to even be possible the BBOX of the request would have to be made in the the dataset native CRS.<br>
<br>
Thanks<br>
<br>
LP<o:p></o:p></p>
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