block_zone_iterate.ex

commercial_zones = get_commercial_zones()
|> Enum.map(fn(%{"geometry" => %{"coordinates" => [coordinates]}}) ->
  coordinates
end)

commercial_blocks = get_blocks()
|> Enum.map(fn(geoJson = %{"geometry" => %{"coordinates" => [coordinates]}}) ->
  # we need the coordinates to check for intersections and the 
  #  original geoJson because if this block is in a commercial 
  #  zone we will want to output it to a new file
  {geoJson, coordinates}
end)
|> Enum.map(fn({geoJson, block}) ->
  # figure out if the block intersects with any of the zones, if so
  #  it is valid, if not we can skip it
end)