I'll like to be able to query along a polyline. The idea is to give
mongo an array of points and a max distance. Mongo should return every
document within the max distance from the polyline. There should also
be an option to tell if it should only be distinct document or not.
polyline = [[10, 20], [10, 40], [30, 40], [30, 20]]
db.places.find({ "loc":

})