I’ve been trying to stop once a week and do something fun with QGIS.
Post Heart Incident I do a lot of walking. I’ve been re-exploring some places I used to go in town to exercise and one is the TN River Walk. I realized the other day I needed to do some OpenStreetMap updating along the riverwalk. So what did I find….A sign I’ve been walking past and ignoring. It’s a historic marker for an Indian mound probably 500 feet off the main path….and it’s sitting next to a manufacturing facility because we apparently enjoyed bulldozing Indian Mounds in the 70s and 80s.
I went to the USGS Lidar Site and we have brand new (within the last year) LIDAR data of the area. I used a couple of display tools for the QGIS project to give the LIDAR Points a more solid look.
In 3D:
So now I can see the building and the clump of trees. If I run the elevation Profile tool:
I have a 3 meter hill under the trees. Finally if I build a DEM from the LIDAR (using Triangulation and a 5 foot grid):
This make it slightly more fun because I can at least see it with out the vegetation. Here is an article from last year on the Chickamauga mound.
Anyway – my fun thing for this week with QGIS. A little 3D. Some LIDAR. PLus playing around with Symbology.
