[Qgis-user] Profile section digitising

[John Harrop]

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 <jlayt at kde.org> wrote:
> 
> On 12 September 2016 at 14:49, Lester Anderson <arctica1963 at gmail.com> 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.
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