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<p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New";color:#1F497D">Hi Even,<o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New";color:#1F497D"><o:p> </o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New";color:#1F497D">Thanks for your reply. I think I get it now.<o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New";color:#1F497D"><o:p> </o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">Well, a VRT dataset is a GDAL dataset, so there's no difference from API usage when requesting a VRT or a GeoTIFF<o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">You can use ds.RasterXSize / ds.RasterYSize to know the VRT dimensions and check if x + width > ds.RasterXSize
or y + height > ds.RasterYSize<o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Okay, so as long as I stay within the VRT bbox I can request data. If I request data inside the VRT bbox even though it
doesn’t have GeoTIFF coverage there, I will still get a result (consisting of zeros)?<o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;-qt-paragraph-type:empty;-qt-block-indent:0">
<span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New""> <o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0"><span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New"">This is indeed a conveniency of gdal_translate itself.
</span><span style="font-size:9.0pt;font-family:"Courier New"">Using ReadAsArray() you must stick to the dataset dimensions.<o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">And I find it very convenient
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">J</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt;-qt-paragraph-type:empty;-qt-block-indent:0">
<span lang="EN-US" style="font-size:9.0pt;font-family:"Courier New";color:#1F497D"><o:p> </o:p></span></p>
<p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Regards, Casper<o:p></o:p></span></p>
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