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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Excellent, I hadn’t tried it since 3.16, will try again.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Unfortunately the problem with using interpolation in model builder still seems like it might be difficult to fix.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><a href="https://github.com/qgis/QGIS/issues/30029">https://github.com/qgis/QGIS/issues/30029</a><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"><b><span style="color:#1F497D;mso-fareast-language:EN-GB">Michael Dufty</span></b><span style="color:#1F497D;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Vincent Cloarec <vcloarec@gmail.com>
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<b>Sent:</b> Friday, 18 December 2020 9:55 PM<br>
<b>To:</b> Michael Dufty <MDufty@mbsenvironmental.com.au><br>
<b>Cc:</b> Nicolas Cadieux <njacadieux.gitlab@gmail.com>; Abhi Shek <psn.abhishek@gmail.com>; qgis-user@lists.osgeo.org<br>
<b>Subject:</b> Re: [Qgis-user] Volume calculation - Reg<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">TIN interpolation was improved in the 3.16 release. Quite crashes were fixed.<o:p></o:p></p>
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<p class="MsoNormal">Please, report any issues in github.<o:p></o:p></p>
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<p class="MsoNormal">Regards.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Vincent.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Le ven. 18 déc. 2020 à 05:29, Michael Dufty <<a href="mailto:MDufty@mbsenvironmental.com.au">MDufty@mbsenvironmental.com.au</a>> a écrit :<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The links for Nicolas are quite useful, but I think to create a raster DEM from vector lines you probably need to use the interpolate triangulation with breaklines or structure
lines. <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The dialogue takes a bit of getting used to, you need to choose the layer the data will come from, click + then in the box below choose whether the layer is being used for points,
breaklines or structure lines.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’ve had major issues with the interpolation crashing QGIS if I try to used it with breaklines for complex imported data, but it seems to work OK for simple test geometries, and
may be good for a simple excavation.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’d be interested to know if anyone has had success with interpolation using breaklines for more complex data, I’ve had to resort to other software trying to import DEM supplied
as dxf 3d faces, but maybe I’m missing a basic step like fixing geometry or removing duplicates.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Qgis-user <<a href="mailto:qgis-user-bounces@lists.osgeo.org" target="_blank">qgis-user-bounces@lists.osgeo.org</a>>
<b>On Behalf Of </b>Nicolas Cadieux<br>
<b>Sent:</b> Friday, 18 December 2020 12:04 AM<br>
<b>To:</b> Abhi Shek <<a href="mailto:psn.abhishek@gmail.com" target="_blank">psn.abhishek@gmail.com</a>><br>
<b>Cc:</b> <a href="mailto:qgis-user@lists.osgeo.org" target="_blank">qgis-user@lists.osgeo.org</a><br>
<b>Subject:</b> Re: [Qgis-user] Volume calculation - Reg</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">This should help<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a href="https://youtu.be/EerXfUf-aHo" target="_blank">https://youtu.be/EerXfUf-aHo</a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><a href="https://www.pointsnorthgis.ca/blog/how-to-calculate-surfacecut-volume-qgis-advanced/" target="_blank">https://www.pointsnorthgis.ca/blog/how-to-calculate-surfacecut-volume-qgis-advanced/</a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Nicolas Cadieux<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a href="https://gitlab.com/njacadieux" target="_blank">https://gitlab.com/njacadieux</a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Le 17 déc. 2020 à 04:57, Abhi Shek <<a href="mailto:psn.abhishek@gmail.com" target="_blank">psn.abhishek@gmail.com</a>> a écrit :<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Sir,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I invite your kind attention to the above subject. I am a beginner in qgis.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I want to create a raster DEM using Vector Lines. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">In a nutshell, I want to calculate the planned excavated volume. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">please guide me in this matter.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">--
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><span style="font-size:9.5pt;color:red">with warm regards,</span><br>
<span style="font-size:9.5pt;color:blue">P S N Abhishek,</span><o:p></o:p></p>
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