In the previous recipe, Importing LiDAR data, we brought a LiDAR 3D point cloud into PostGIS, creating an explicit 3D dataset from the input. With the data in 3D form, we have the ability to perform spatial queries against it. In this recipe, we will leverage 3D indexes so that our nearest-neighbor search works in all the dimensions our data are in.
Performing 3D queries on a LiDAR point cloud
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