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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I recommend to read the WCS 2.0 core standard which does not support bbox, resx or resy anymore. Mapserver documentation shows also how to use SUBSET
<a href="https://www.mapserver.org/ogc/wcs_server.html">https://www.mapserver.org/ogc/wcs_server.html</a>. If you need to change the pixel size then the document to read is the WCS Scaling extension standard
<a href="https://portal.opengeospatial.org/files/12-039">https://portal.opengeospatial.org/files/12-039</a>.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-Jukka Rahkonen-<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="mso-fareast-language:FI">Lähettäjä:</span></b><span style="mso-fareast-language:FI"> mapserver-users <mapserver-users-bounces@lists.osgeo.org>
<b>Puolesta </b>Moisan, Yves (NRCAN/RNCAN)<br>
<b>Lähetetty:</b> keskiviikko 5. kesäkuuta 2019 21.05<br>
<b>Vastaanottaja:</b> mapserver-users@lists.osgeo.org<br>
<b>Aihe:</b> [mapserver-users] WCS 2.0.1 not returning same image as WCS 1.0.0<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="FR-CA">Hi All,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA">On Ubuntu 18.04 with : <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA">MapServer version 7.0.7 OUTPUT=PNG OUTPUT=JPEG OUTPUT=KML SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO SUPPORTS=SVG_SYMBOLS SUPPORTS=RSVG SUPPORTS=ICONV SUPPORTS=FRIBIDI SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT
SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">When I issue a GetCoverage in WCS 1.0.1 I get a 1635 X 1940 pixels GTiff image :<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><a href="http://myserver?SERVICE=WCS&VERSION=1.0.0&REQUEST=GetCoverage&COVERAGE=myCoverage&bbox=376509,4898728,377163,4899504&crs=EPSG:26918&resx=0.4&resy=0.4&FORMAT=image/tiff">http://myserver?SERVICE=WCS&VERSION=1.0.0&REQUEST=GetCoverage&COVERAGE=myCoverage&bbox=376509,4898728,377163,4899504&crs=EPSG:26918&resx=0.4&resy=0.4&FORMAT=image/tiff</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">The same request, only in 2.0.1 and with COVERAGEID instead of COVERAGE, I get :
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">msWCSGetCoverage20(): WCS server error. Raster size out of range, width and height of resulting coverage must be no more than MAXSIZE=4096.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">How can that be ? I’m specifying <i>resx</i>
<i>resy</i> to the values pixels have in the image behind the service (and when I overlay the image I get back from the WCS 1.0.0 call it matches the original image pixel for pixel) so there can’t be interpolation going on here. I’m surprised.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Thanx for pointers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Yves<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
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