SQLite Database Schema
id: A basic identifier, must be a unique integer
name: The name of the map
ekey: Encryption key, can be any random string of characters and numbers
fname: The filename of the map JPEG. This must match the end of the URL
url: The full URL to the location of the image
The next 4 columns come from the world file, in order
min_longitude
max_latitude
lat_per_pixel
lon_per_pixel
And then the last two columns...
polygon_points: These are the points, in pixels of the polygon of the map. On the final georeferenced image, there are areas that are not covered by the map. We want to make sure we are within the map polygon so we must get the points from that.
description: A description of the map