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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Capture and show the http request that your code generates and sends to the WMTS server. Does it work if you send the same request with curl or with a browser? Or does the error come
before the GetTile request is generated?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">-Jukka Rahkonen-<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>Lähettäjä:</b> Micha³ Kowalczuk <michkowalczuk@gmail.com>
<br>
<b>Lähetetty:</b> perjantai 30. elokuuta 2024 9.59<br>
<b>Vastaanottaja:</b> Robert Coup <robert.coup@koordinates.com><br>
<b>Kopio:</b> gdal-dev@lists.osgeo.org; Rahkonen Jukka <jukka.rahkonen@maanmittauslaitos.fi><br>
<b>Aihe:</b> Re: [gdal-dev] WMTS gdal_translate vs RasterIO<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Sorry for incorrect sample commands in the last message.<o:p></o:p></p>
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<p class="MsoNormal">I fixed it. The problem stays the same, because the problem was in email not in my tested code.<o:p></o:p></p>
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<p class="MsoNormal"><b>gdal_translate -srcwin 0 0 1073741760 1553779 -outsize 691 1 "WMTS:<a href="https://basemap.nationalmap.gov/arcgis/rest/services/USGSHydroCached/MapServer/WMTS/1.0.0/WMTSCapabilities.xml,layer=USGSHydroCached,tilematrixset=default028mm">https://basemap.nationalmap.gov/arcgis/rest/services/USGSHydroCached/MapServer/WMTS/1.0.0/WMTSCapabilities.xml,layer=USGSHydroCached,tilematrixset=default028mm</a>"
tile.png</b><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>GDALDatasetRasterIO(</b><o:p></o:p></p>
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<p class="MsoNormal"><b>handle_to_wmts_subdataset,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>eRWFlag=GF_Read,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nXOff=0,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nYOff=0,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nXSize=1073741760,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nYSize=1553779,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>pBuffer - buffer for data,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nBufXSize=691,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nBufYSize=1,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>eBufType=GDT_Byte,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nBandCount=4,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>panBandMap=[bIndex ,gIndex, rIndex, aIndex],</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nPixelSpace=4,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nLineSpace=0,</b><o:p></o:p></p>
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<p class="MsoNormal"><b>nBandSpace=1)</b><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Can anyone help me to understand why gdal_translate works and generates output file, where GDALRasterIO raises error:<o:p></o:p></p>
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<p class="MsoNormal"><b>Requested (0,0) of size 1073741760x1553779 on raster of 1073741756x1347126255?</b><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">czw., 29 sie 2024 o 12:22 Micha³ Kowalczuk <<a href="mailto:michkowalczuk@gmail.com">michkowalczuk@gmail.com</a>> napisa³(a):<o:p></o:p></p>
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<p class="MsoNormal">I see. I will double check commands, fix and return to this.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">W dniu czw., 29.08.2024 o 12:20 Robert Coup <<a href="mailto:robert.coup@koordinates.com" target="_blank">robert.coup@koordinates.com</a>> napisa³(a):<o:p></o:p></p>
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<p class="MsoNormal">Hi Micha³,<o:p></o:p></p>
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<p class="MsoNormal"><br>
In addition to Jukka's key point:<br>
<br>
nBufXSize=1,<br>
nBufYSize=691,<br>
<br>
appears to be backwards wrt:<o:p></o:p></p>
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<p class="MsoNormal"><br>
-outsize 691 1<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Rob :)<o:p></o:p></p>
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