gistfile1.js

// Finding a "start" point

> use proximity
switched to db proximity
> doc
{
	"loc" : {
		"type" : "LineString",
		"coordinates" : [
			[
				40,
				5
			],
			[
				41,
				6
			]
		]
	},
	"name" : "Eric",
	"route" : 1,
	"leg" : 1,
	"tags" : [
		"start"
	]
}
> db.routes.insert(doc)
> db.routes.ensureIndex({ "loc" : "2dsphere", "tags" : 1 })
> db.routes.find({ "loc" : { "$near" : { "$geometry" : { type : "Point" ,   "coordinates" : [ 40.0001 , 5.0001 ] } , "$maxDistance" : 100 } }, "tags": "start" } )
{ "_id" : ObjectId("531d40a44ef44728e43ed2db"),
  "loc" : { "type" : "LineString", "coordinates" : [  [  40,  5 ],  [  41,  6 ] ] },
  "name" : "Eric",
  "route" : 1,
  "leg" : 1,
  "tags" : [  "start" ] }


// Finding a "route" in order

db.routes.ensureIndex({route": 1, "leg": 1})
> db.routes.find({"route": 1}).sort({"leg": 1})
{ "_id" : ObjectId("531d42f74ef44728e43ed2df"), "loc" : { "type" : "LineString", "coordinates" : [  [  40,  5 ],  [  41,  6 ] ] }, "name" : "Eric", "route" : 1, "leg" : 1, "tags" : [  {  "name" : "start",  "description" : "hello" } ] }

Thanks very much for sharing this, Eric. I'm tempted to port the data and test it now, but I have to get some sleep on this bus back to L.A. I'll put it to use in the afternoon.