Android Open Source - Fast Statistics

From Project

Back to project page Fast.
License

The source code is released under:
GNU General Public License
If you think the Android project Fast listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package com.example.fast;
//w ww  .ja  v a2  s .c  o  m
import android.location.Location;

/**
 * Object that holds data about a users current run.  This data should be saved to the database when completed.
 * @author michael
 *
 */
public class Statistics {

  private double averageSpeed = 0;
  private double maxSpeed = 0;
  private double distanceTravelled = 0;
  private double averageHeartrate;
  private Location previousLocation;
  
  /**
   * Updates all stored data based on a newLocation found.  Takes in the new location and heartrate and calculates
   * moving averages and updates the data.
   * @param newLocation
   * @param heartrate
   */
  public void update(Location newLocation, double heartrate){
  
    if(previousLocation != null){
      updateSpeed(previousLocation, newLocation);
      updateHeartrate(heartrate);  
      /* Update Distance */
      updateDistance(previousLocation, newLocation);
    }
    previousLocation = newLocation;
  }
  
  private void updateHeartrate(double heartrate) {
    
    if(averageHeartrate != 0.0){
      averageHeartrate = (averageHeartrate + heartrate)/2;
    }
    else{
      averageHeartrate = heartrate;
    }
      
  }


  private void updateSpeed(Location previousLocation2, Location newLocation) {
    
    float distance = previousLocation2.distanceTo(newLocation);
    if(distance == Float.NaN){
      distance = 0;
    }
    
    double instantSpeed = distance/((newLocation.getElapsedRealtimeNanos() - previousLocation2.getElapsedRealtimeNanos())/1e9);
    if(instantSpeed == Double.NaN){
      instantSpeed = 0;
    }
    
    /* Max speed check */
    if(instantSpeed > maxSpeed)
      maxSpeed = instantSpeed;

    averageSpeed = (averageSpeed + instantSpeed)/2;
    
  }

  private void updateDistance(Location previousLocation2, Location newLocation) {
    
    float distance = previousLocation2.distanceTo(newLocation);
    /* Update total */
    distanceTravelled = distanceTravelled + distance;
  }

  /**
   * Converts Meters Per Seconds to Miles Per Hour
   * @param speed
   * @return
   */
  public static double milesPerHour(double speed){
    return speed * 2.23694;
  }
  
  /**
   * Converts Meters to Miles
   * @param speed
   * @return
   */
  public static double miles(double distance){
    return distance * 0.000621371;
  }
  
  /**
   * Converts Meters Per Seconds to Kilometers Per Hour
   * @param speed
   * @return
   */
  public static double kilometersPerHour(double speed){
    return speed * 3.6;
  }
  
  /**
   * Converts Meters to Kilometers
   * @param speed
   * @return
   */
  public static double kilometers(double distance){
    return distance * 0.001;
  }
  

  public double getAverageSpeed() {
    return averageSpeed;
  }

  public void setAverageSpeed(double averageSpeed) {
    this.averageSpeed = averageSpeed;
  }

  public double getMaxSpeed() {
    return maxSpeed;
  }
  
  public Location getPreviousLocation() {
    return previousLocation;
  }

  public double getAverageHeartrate() {
    return averageHeartrate;
  }
  public void setAverageHeartrate(double averageHeartrate) {
    this.averageHeartrate = averageHeartrate;
  }
  public void setPreviousLocation(Location previousLocation) {
    this.previousLocation = previousLocation;
  }

  public void setMaxSpeed(double maxSpeed) {
    this.maxSpeed = maxSpeed;
  }

  public double getDistanceTravelled() {
    return distanceTravelled;
  }

  public void setDistanceTravelled(double distanceTravelled) {
    this.distanceTravelled = distanceTravelled;
  }
}
Java Source Code List
