math

Class PostOfficeMetric

java.lang.Object

math.PostOfficeMetric

All Implemented Interfaces:

Metric

public class PostOfficeMetric
extends java.lang.Object
implements Metric

The Post Office metric (i.e., a notion of distance that makes sense if, to travel between two points, you have to go through a central post office located at the origin).

This is sometimes also called the British Rail metric and/or the shuttle metric.

Version:

1.0

Author:

Prof. David Bernstein, James Madison University

See Also:

"The Design and Implementation of Multimedia Software © 2011"

Constructor Summary

Constructors

Constructor and Description
PostOfficeMetric()

Method Summary

Modifier and Type	Method and Description
double	distance(double[] x, double[] y) Calculate the distance between two n-dimensional points (required by Metric).

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PostOfficeMetric

public PostOfficeMetric()

Method Detail

distance

public double distance(double[] x,
                       double[] y)

Calculate the distance between two n-dimensional points (required by Metric). Note: For simplicity, this method does not confirm that the two arrays are the same size. It uses the smaller size.

Specified by:

distance in interface Metric

Parameters:

x - One n-dimensional point

y - Another n-dimensional point

Returns:

The distance