I have a pointcloud in postgis, imported using pdal pipeline and chipper to 600 points per patch. I have the pointcloud (only 5000 points) displayed in QGIS. How do I get QGIS to render in in 3D in the 3D viewer, for some reason it is ignoring the z-dimension. It is displayed using the database manager and the following query.
SELECT PC_EXPLODE(pa)::geometry as geom from pcpatches
The screen shot shows the 3D viewer on the right, it should be a deep trench.