Friday, 18 November 2016

3d - Drawing cross section in QGIS?


Does anyone have a simple work-flow for drawing cross sections of earth features in QGIS?


My thing is that QGIS is being used to present the plan view, but we have a little interest in some elevations as well. All the data is one set and is simply an elevation value in the attribute table, I don't want to have to move all that to CAD.


One logical workaround is to present the z value as the y.


I am a dunce in paper space in CAD, and would be more comfortable with the QGIS Composer.



Answer



First you have to use a DEM, then you have to have installed the terrain profile plugin. Once is active, all you have to do is draw a line over your DEM and the plugin will calculate the profile. A nice thing is that you can play with the vertical exaggeration and also that you can export the profile as a PDF. A minor thing is that the drawing tool of the plugin only allows you trace a straight line...Git it a try!


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