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.
John Harrop VP Exploration International Lithium Corp > On Sep 13, 2016, at 7:25 AM, John Layt <[email protected]> wrote: > > On 12 September 2016 at 14:49, Lester Anderson <[email protected]> wrote: > >> I was wondering if anyone had advice or ideas about digitising profile >> data (say on a geological cross-section) that is referenced to a >> polyline in the project, > > This is something we've been working on for archaeological use cases. > At the moment we digitise our sections using false coordinates, then > use composer to show both the plan and section views. We cheat by > storing the 2D plan coordinates in real space so they show up in > spatial queries and can be visualised by setting a buffer around them, > but they're not really linked in a data or ui sense. > > Longer term, I have a cunning plan to start using the new-ish 3D > geometry engine to store the sections in 3D so they can live in the > same shapefiles and so be properly queried, and by clicking on the > section line in plan view a pop-up window shows the section by > flipping the y and z coordinates on the fly. Unfortunately it's on a > very long list of such ideas... > > There's also a plugin called Midvatten which does borehole data which > may have some ideas you could borrow. > > John. > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: http://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
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