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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">The exact use case is for the GDAL community help desk. I was wondering how this user
<a href="https://gis.stackexchange.com/questions/469512/cannot-write-geotiff-larger-than-4gb-with-gdalwarp-despite-using-bigtiff-createo">
https://gis.stackexchange.com/questions/469512/cannot-write-geotiff-larger-than-4gb-with-gdalwarp-despite-using-bigtiff-createo</a> could check if their TIFF is created as BigTIFF or not.<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> Kurt Schwehr <schwehr@gmail.com> <br>
<b>Lähetetty:</b> perjantai 3. marraskuuta 2023 3.08<br>
<b>Vastaanottaja:</b> Even Rouault <even.rouault@spatialys.com><br>
<b>Kopio:</b> Rahkonen Jukka <jukka.rahkonen@maanmittauslaitos.fi>; 'gdal-dev@lists.osgeo.org' (gdal-dev@lists.osgeo.org) <gdal-dev@lists.osgeo.org><br>
<b>Aihe:</b> Re: [gdal-dev] Show isBigTIFF in image metadata<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Jukka,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">What's the exact use case for needing to know if a tiff is traditional or BigTIFF? Is there a key tool that doesn't understand BigTIFF? The only one I know of is Autodesk Civil3D.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal">-Kurt<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Nov 2, 2023 at 2:49 PM Even Rouault via gdal-dev <<a href="mailto:gdal-dev@lists.osgeo.org">gdal-dev@lists.osgeo.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Jukka, <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"><br>
Does it feel reasonable? I know that overviews may be standard TIFFs while the main image is BigTIFF but maybe the information from the header would be enough. Or have I missed some existing tool? I thought that tiffinfo at least would report TIFF/BigTIFF but
it doesn’t.</span><o:p></o:p></p>
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<p>tiffdump does:<o:p></o:p></p>
<p>$ tiffdump byte.tif<br>
byte.tif:<br>
Magic: 0x4949 <little-endian> Version: 0x2a <ClassicTIFF><o:p></o:p></p>
<p>vs<o:p></o:p></p>
<p style="margin-bottom:12.0pt">$ tiffdump bigtiff.tif <br>
bigtiff.tif:<br>
Magic: 0x4949 <little-endian> Version: 0x2b <BigTIFF><o:p></o:p></p>
<p class="MsoNormal">Even <o:p></o:p></p>
<pre>-- <o:p></o:p></pre>
<pre><a href="http://www.spatialys.com/" target="_blank">http://www.spatialys.com</a><o:p></o:p></pre>
<pre>My software is free, but my time generally not.<o:p></o:p></pre>
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<p class="MsoNormal">_______________________________________________<br>
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