Description of Map Coverage Areas

[pnoll1]

Is your feature request related to a problem? Please describe.
It's hard to tell what area is included with files like Us_ca_south. User can mistakenly download a different area and be confused when no map data shows up.

Describe the solution you'd like
A description of coverage area

Additional context
#82

[pnoll1]

Bounding boxes and names are used to create sliced map files. These could be laid out on a leaflet map on opensupermaps.com. Would need to figure out how to make the map findable.

Could name file after biggest city in file. This may confuse people thinking that only that city is in the file.

Could add description for each file on opensuper , probably largest city on second line. Would want to have it in config file so there's single source of truth for file info.

[undrwater]

and surrounding area. square miles / meters.

Is there a defined radius for the map areas?

[pnoll1]

Areas are created by slicing the state file with bounding boxes. Basically, each state is split into rectangles.

slice_config['us:ca'] = [['north','-119.997,41.998,-125.365,38.964'],['northcentral','-125.365,38.964,-114.049,37.029'],['central','-114.04 9,37.029,-123.118,34.547'],['southcentral','-123.118,34.547,-113.994,33.312'],['south','-113.994,33.312,-119.96,31.85']]