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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif;mso-fareast-language:EN-US">Hi Andrea,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Tahoma",sans-serif;mso-fareast-language:EN-US">you are right, I’ve missed that reply.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Tahoma",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Tahoma",sans-serif;mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Tahoma",sans-serif;mso-fareast-language:EN-US">Michael<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>Von:</b> Qgis-user <qgis-user-bounces@lists.osgeo.org> <b>
Im Auftrag von </b>Andrea Giudiceandrea via Qgis-user<br>
<b>Gesendet:</b> Samstag, 30. Juli 2022 11:19<br>
<b>An:</b> qgis-user@lists.osgeo.org<br>
<b>Betreff:</b> Re: [Qgis-user] WG: Convert huge shapefile to small size<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><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black">Reetz, Michael (NLPV)</span></b><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black"><br>
</span><i><span style="color:black">Fri Jul 29 03:46:34 PDT 2022</span></i> <o:p>
</o:p></p>
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<pre style="white-space:pre-wrap;font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2;text-align:start;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-thickness: initial;text-decoration-style: initial;text-decoration-color: initial;word-spacing:0px"><span style="color:black">maybe I'm wrong, but isn't the maximum file size for the dbf format 2 GB? Obviously it is possible to put more data in it (with ESRI software ?), but this may lead to problems if the file is used with other software.<o:p></o:p></span></pre>
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<p class="MsoNormal"><br>
Hi Michael,<br>
probably you missed my previous replay:<br>
<br>
Il 28/07/2022 22:19, Andrea Giudiceandrea ha scritto:<br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal">The QGIS / GDAL/OGR implementation goes beyond the normal ESRI implementation limit ("2 GB size limit for any shapefile component file").<br>
<br>
See <a href="https://gdal.org/drivers/vector/shapefile.html">https://gdal.org/drivers/vector/shapefile.html</a><br>
***<br>
Size Issues<br>
Geometry: The Shapefile format explicitly uses 32bit offsets and so cannot go over 8GB (it actually uses 32bit offsets to 16bit words), but the OGR shapefile implementation has a limitation to 4GB.<br>
<br>
Attributes: The dbf format does not have any offsets in it, so it can be arbitrarily large.<br>
***<o:p></o:p></p>
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