Acceleration4TrackProcess Description
This process computes the mean acceleration for a track.
Algorithm Description
The different steps are as follows:
 process iterates over all pairs of consecutive measurements
 travel distance
 computes the distance between consecutive measurements and sums it up to the total distance per track
 travel time
 stores first and last time stamp and then computes the travel time (in minutes)
 mean speed
 computes the average of all speed values
 mean acceleration:
 computes the duration (delta_time) and difference in speed (delta_speed)
 computes the acceleration (ratio between delta_speed and delta_time; currently only positive values, which means an increase in speed, are considered
Process Parameters
Identifier
org.envirocar.wps.Statistics4TrackProcess
 trackID
 Type: String
 Description: ID of track for which mean acceleration should be computed
Outputs
 meanAcceleration:
 Type: double
 Description: Mean acceleration of track.

 meanSpeed:
 Type: double
 Description: Mean speed of track in km/h.
 travelDistance:
 Type: double
 Description: Distance of a track in meters.
 travelTime:
 Type: double
 Description: total time traveled in minutes.