README.dev.md

terrain_aggregator : how it was developed

1. Create PostgreSQL database of TNRIS Lidar tiles

   • TNRIS provides a vector file indexing the best available Lidar data TNRIS provides on a tile-by-tile basis.
   • However, there are many deficiencies that prevent using this file as a starting point to aggregate Lidar data in bulk, including :
     • only represents "best available" data, not all available TNRIS Lidar data
     • tile geometries are sometimes
       • incorrect :
         • some tile boundaries have
           • rounded corners where there is data all the way to the corner
           • intersected with watersheds where there is data beyond the watershed boundaries
           • chopped along a latitude or longitude where there is data beyond the chop
       • have inconsistently applied boundaries :
         • when tiles overlap each other,
           • sometimes they are left whole
           • sometimes they are chopped in favor of the "best available"
     • tile attributes are sometimes
       • demname attribute errors :
         • reported resolution incorrect
       • reported resolution is sometimes

2. Create Docker/Singularity image of