GPS locations path test. Input Values: v=3.65, a=1.32, t=15.  Output Points: 191/227
URL: http://javierrey.com/project-locations-path/?v=0&a=0&t=0 (v: Speed Threshold, a: Acceleration Threshold, t: Time Scale)
Use 0 for default values: v: 3.65, a: 1.32, t: 15
Use -1 for no filtering, huge thresholds: v: 1000, a: 1000
Use -2 for full filtering, only shows stops: v: 0, a: 0