<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">A related route I’ve been looking at is working in 3D in a Postgresql/PostGIS system and generating the views to support what QGIS needs to work with. This is part of a bigger geological data management system we are building.<div class=""><br class=""><div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">John Harrop<br class="">VP Exploration<br class="">International Lithium Corp<br class=""><br class=""></div></div></div></div><div><blockquote type="cite" class=""><div class="">On Sep 13, 2016, at 7:25 AM, John Layt <<a href="mailto:jlayt@kde.org" class="">jlayt@kde.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">On 12 September 2016 at 14:49, Lester Anderson <<a href="mailto:arctica1963@gmail.com" class="">arctica1963@gmail.com</a>> wrote:<br class=""><br class=""><blockquote type="cite" class="">I was wondering if anyone had advice or ideas about digitising profile<br class="">data (say on a geological cross-section) that is referenced to a<br class="">polyline in the project,<br class=""></blockquote><br class="">This is something we've been working on for archaeological use cases.<br class="">At the moment we digitise our sections using false coordinates, then<br class="">use composer to show both the plan and section views. We cheat by<br class="">storing the 2D plan coordinates in real space so they show up in<br class="">spatial queries and can be visualised by setting a buffer around them,<br class="">but they're not really linked in a data or ui sense.<br class=""><br class="">Longer term, I have a cunning plan to start using the new-ish 3D<br class="">geometry engine to store the sections in 3D so they can live in the<br class="">same shapefiles and so be properly queried, and by clicking on the<br class="">section line in plan view a pop-up window shows the section by<br class="">flipping the y and z coordinates on the fly. Unfortunately it's on a<br class="">very long list of such ideas...<br class=""><br class="">There's also a plugin called Midvatten which does borehole data which<br class="">may have some ideas you could borrow.<br class=""><br class="">John.<br class="">_______________________________________________<br class="">Qgis-user mailing list<br class=""><a href="mailto:Qgis-user@lists.osgeo.org" class="">Qgis-user@lists.osgeo.org</a><br class="">List info: http://lists.osgeo.org/mailman/listinfo/qgis-user<br class="">Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user</div></div></blockquote></div><br class=""></div></body></html>