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Adaptation of the GDE prototype code to work with quadtiles instead of 10-arcsec cells

Merged Cecilia Nievas requested to merge feature/quadtiles into master

This new version of the GDE prototype code works with zoom-level 18 quadtiles instead of 10-arcsec cells.

Apart from minor adjustments in several scripts, the major changes are associated with:

  • Complete modification of GDE_TOOLS_world_grid.py to define zoom-level 18 quadtiles.
  • Creation of function to retrieve GHS built-up area from the OBM Tiles database in GDE_TOOLS_psql.py.
  • Creation of function to retrieve completeness values from the OBM Tiles database in GDE_TOOLS_psql.py.
  • Fixing of a bug in transform_dict_into_dataframe of GDE_TOOLS_read_SERA.py when the sum in row is zero.