<div dir="ltr"><div class="gmail_default" style="font-size:small">Thank you all,</div><div class="gmail_default" style="font-size:small">sorry Andrew, it is not your fault, it is me, that do not know PDAL very well and therefore I was missing this step.</div><div class="gmail_default" style="font-size:small">As suggested by James, it would be enough to add the note to use filters.ferry.</div><div class="gmail_default" style="font-size:small">Unfortunately, or lucky, PDAL have a lot of commands but it is not sto easy to go through all of them to understand what they do and if there could be something else usable for your personal case...</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The mailing list is in any case very responsive and helpful.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">PS: I saw that there are not so many (2-3) proposals for presentations at FOSS4G in Bucharest, did someone proposed also a workshop? it would be interesting to know.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Thanks again for all!</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Silvia</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 30, 2019 at 4:14 PM James Klassen <<a href="mailto:klassen.js@gmail.com">klassen.js@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="auto">It took me a little bit of digging when I first tried something similar to understand the schema was explicit in pdal (unlike in json) and that filters.ferry was used to change it.  Now that I know, it isn't a problem, and I do like the typo safety aspect of the current behavior.<br></div><div dir="auto"><br></div><div dir="auto">Maybe the solution is as simple as adding a note to the filters.assign docs that says "If you intend to assign to a new dimension, that dimension needs to be created first with filters.ferry."</div><div dir="auto"><br></div><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Tue, Apr 30, 2019, 07:13 Andrew Bell <<a href="mailto:andrew.bell.ia@gmail.com" target="_blank">andrew.bell.ia@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Silvia,</div><div><br></div>There's been discussion about changing the assignment filter to automatically create dimensions.  I believe that my reasoning when I decided against that was that it might create hard-to-find errors due to misspellings.  In retrospect, it may have been the wrong decision.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 30, 2019 at 5:23 AM Silvia Franceschi <<a href="mailto:silvia.franceschi@gmail.com" rel="noreferrer" target="_blank">silvia.franceschi@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small">Thanks a lot Luigi! <br></div><div class="gmail_default" style="font-size:small">I added this to the pipeline:</div><div class="gmail_default" style="font-size:small"><div class="gmail_default">{</div><div class="gmail_default">          "type": "filters.ferry",</div><div class="gmail_default">          "dimensions": "=>Classification"</div><div class="gmail_default">   },</div><div class="gmail_default">and now it seems to proceed!</div><div class="gmail_default"><br></div><div class="gmail_default">Thanks again for the big help!</div><div class="gmail_default"><br></div><div class="gmail_default">Silvia</div><div class="gmail_default"><br></div><div class="gmail_default"><br></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 30, 2019 at 11:10 AM Luigi Pirelli <<a href="mailto:luipir@gmail.com" rel="noreferrer" target="_blank">luipir@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">use filters.ferry for that<div><br clear="all"><div><div dir="ltr" class="gmail-m_-6578723710959460696m_7426026477793883860gmail-m_-769911643774040928gmail-m_-6761044939870118680gmail_signature"><div dir="ltr"><div><a href="https://pdal.io/stages/filters.ferry.html" rel="noreferrer" target="_blank">https://pdal.io/stages/filters.ferry.html</a><br></div><div><br></div><div>Luigi Pirelli<br><br>**************************************************************************************************<br>* LinkedIn: <a href="https://www.linkedin.com/in/luigipirelli" rel="noreferrer" target="_blank">https://www.linkedin.com/in/luigipirelli</a><br>* Stackexchange: <a href="http://gis.stackexchange.com/users/19667/luigi-pirelli" rel="noreferrer" target="_blank">http://gis.stackexchange.com/users/19667/luigi-pirelli</a><br>* GitHub: <a href="https://github.com/luipir" rel="noreferrer" target="_blank">https://github.com/luipir</a><br>* Mastering QGIS 2nd Edition:<br>* <a href="https://www.packtpub.com/big-data-and-business-intelligence/mastering-qgis-second-edition" rel="noreferrer" target="_blank">https://www.packtpub.com/big-data-and-business-intelligence/mastering-qgis-second-edition</a><br>* Hire me: <a href="http://goo.gl/BYRQKg" rel="noreferrer" target="_blank">http://goo.gl/BYRQKg</a><br>**************************************************************************************************</div></div></div></div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 30 Apr 2019 at 10:54, Silvia Franceschi <<a href="mailto:silvia.franceschi@gmail.com" rel="noreferrer" target="_blank">silvia.franceschi@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small">Thanks Luigi,</div><div class="gmail_default" style="font-size:small">you are perfectly right... this is a print of the details of first point:</div><div class="gmail_default" style="font-size:small"><div class="gmail_default"><div class="gmail_default">"point":<br></div><div class="gmail_default">    {</div><div class="gmail_default">      "Blue": 155,</div><div class="gmail_default">      "Green": 153,</div><div class="gmail_default">      "Intensity": 2497,</div><div class="gmail_default">      "PointId": 0,</div><div class="gmail_default">      "Red": 159,</div><div class="gmail_default">      "X": 63.45360184,</div><div class="gmail_default">      "Y": 0.0307,</div><div class="gmail_default">      "Z": 0</div><div class="gmail_default">    }</div><div class="gmail_default"><br></div></div><div class="gmail_default">So now I should create the field for the classification, any idea?</div><div class="gmail_default"><br></div><div class="gmail_default">Thanks again!</div><div class="gmail_default"><br></div><div class="gmail_default">Silvia</div><div class="gmail_default"><br></div><div class="gmail_default"><br></div><div class="gmail_default"><br></div></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 30, 2019 at 10:44 AM Luigi Pirelli <<a href="mailto:luipir@gmail.com" rel="noreferrer" target="_blank">luipir@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">can you check if Classification dimension is present? strange but seems it doesn't<br clear="all"><div><div dir="ltr" class="gmail-m_-6578723710959460696m_7426026477793883860gmail-m_-769911643774040928gmail-m_-6761044939870118680gmail-m_6190192533562738415gmail-m_5253014646305391843gmail-m_-943938629523866035gmail_signature"><div dir="ltr"><div><br></div><div>Luigi Pirelli<br><br>**************************************************************************************************<br>* LinkedIn: <a href="https://www.linkedin.com/in/luigipirelli" rel="noreferrer" target="_blank">https://www.linkedin.com/in/luigipirelli</a><br>* Stackexchange: <a href="http://gis.stackexchange.com/users/19667/luigi-pirelli" rel="noreferrer" target="_blank">http://gis.stackexchange.com/users/19667/luigi-pirelli</a><br>* GitHub: <a href="https://github.com/luipir" rel="noreferrer" target="_blank">https://github.com/luipir</a><br>* Mastering QGIS 2nd Edition:<br>* <a href="https://www.packtpub.com/big-data-and-business-intelligence/mastering-qgis-second-edition" rel="noreferrer" target="_blank">https://www.packtpub.com/big-data-and-business-intelligence/mastering-qgis-second-edition</a><br>* Hire me: <a href="http://goo.gl/BYRQKg" rel="noreferrer" target="_blank">http://goo.gl/BYRQKg</a><br>**************************************************************************************************</div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 30 Apr 2019 at 09:40, Silvia Franceschi <<a href="mailto:silvia.franceschi@gmail.com" rel="noreferrer" target="_blank">silvia.franceschi@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small">Dear all,</div><div class="gmail_default" style="font-size:small">I am trying to extract the DTM from a point cloud of a terrestrial LiDAR. Points of the survey are all of one single return and do no have a classification.</div><div class="gmail_default" style="font-size:small">To go on with the elaborations I guess that I have to assign a classification of the points otherwise the tools (filter.smrf) do not work, is this true?</div><div class="gmail_default" style="font-size:small">I tried to use the command filters.assign with the following statement in a pipeline (json file). </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default"><div class="gmail_default">{</div><div class="gmail_default">      <span style="white-space:pre-wrap">   </span>    "type":"filters.assign",</div><div class="gmail_default"><span style="white-space:pre-wrap">       </span>    "assignment":"Classification[:]=0"</div><div class="gmail_default">        },</div><div style="font-size:small"><br></div><div style="font-size:small">But  got this error:</div><div style="font-size:small"><div>PDAL: filters.assign: Invalid dimension name in 'assignment' option: 'Classification'.</div><div><br></div><div>Do some of you understand which is the problem?</div><div><br></div><div>Thanks in advance for your help.</div><div><br></div><div>Silvia</div><div><br></div></div></div><div><br></div>-- <br><div dir="ltr" class="gmail-m_-6578723710959460696m_7426026477793883860gmail-m_-769911643774040928gmail-m_-6761044939870118680gmail-m_6190192533562738415gmail-m_5253014646305391843gmail-m_-943938629523866035gmail-m_-9028234106589427605gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="font-size:small">ing. Silvia Franceschi<br>Via Roma, 64</div><div style="font-size:small">38030 Castello di Fiemme (TN)<br><br>tel: 0039 -3384501332</div></div></div></div></div></div></div></div></div></div></div></div>
_______________________________________________<br>
pdal mailing list<br>
<a href="mailto:pdal@lists.osgeo.org" rel="noreferrer" target="_blank">pdal@lists.osgeo.org</a><br>
<a href="https://lists.osgeo.org/mailman/listinfo/pdal" rel="noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/pdal</a></blockquote></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_-6578723710959460696m_7426026477793883860gmail-m_-769911643774040928gmail-m_-6761044939870118680gmail-m_6190192533562738415gmail-m_5253014646305391843gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="font-size:small">ing. Silvia Franceschi<br>Via Roma, 64</div><div style="font-size:small">38030 Castello di Fiemme (TN)<br><br>tel: 0039 -3384501332</div></div></div></div></div></div></div></div></div>
_______________________________________________<br>
pdal mailing list<br>
<a href="mailto:pdal@lists.osgeo.org" rel="noreferrer" target="_blank">pdal@lists.osgeo.org</a><br>
<a href="https://lists.osgeo.org/mailman/listinfo/pdal" rel="noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/pdal</a></blockquote></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_-6578723710959460696m_7426026477793883860gmail-m_-769911643774040928gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="font-size:small">ing. Silvia Franceschi<br>Via Roma, 64</div><div style="font-size:small">38030 Castello di Fiemme (TN)<br><br>tel: 0039 -3384501332</div></div></div></div></div></div></div></div></div>
_______________________________________________<br>
pdal mailing list<br>
<a href="mailto:pdal@lists.osgeo.org" rel="noreferrer" target="_blank">pdal@lists.osgeo.org</a><br>
<a href="https://lists.osgeo.org/mailman/listinfo/pdal" rel="noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/pdal</a></blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_-6578723710959460696m_7426026477793883860gmail_signature">Andrew Bell<br><a href="mailto:andrew.bell.ia@gmail.com" rel="noreferrer" target="_blank">andrew.bell.ia@gmail.com</a></div>
_______________________________________________<br>
pdal mailing list<br>
<a href="mailto:pdal@lists.osgeo.org" rel="noreferrer" target="_blank">pdal@lists.osgeo.org</a><br>
<a href="https://lists.osgeo.org/mailman/listinfo/pdal" rel="noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/pdal<br></a></blockquote></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="font-size:small">ing. Silvia Franceschi<br>Via Roma, 64</div><div style="font-size:small">38030 Castello di Fiemme (TN)<br><br>tel: 0039 -3384501332</div></div></div></div></div></div></div></div></div>