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Java example source code file (EuclideanIntegerPoint.java)

This example Java source code file (EuclideanIntegerPoint.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

clusterable, collection, deprecated, euclideanintegerpoint, object, override, serializable, string, util

The EuclideanIntegerPoint.java Java example source code

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.commons.math3.stat.clustering;

import java.io.Serializable;
import java.util.Arrays;
import java.util.Collection;

import org.apache.commons.math3.util.MathArrays;

 * A simple implementation of {@link Clusterable} for points with integer coordinates.
 * @since 2.0
 * @deprecated As of 3.2 (to be removed in 4.0),
 * use {@link org.apache.commons.math3.ml.clustering.DoublePoint} instead
public class EuclideanIntegerPoint implements Clusterable<EuclideanIntegerPoint>, Serializable {

    /** Serializable version identifier. */
    private static final long serialVersionUID = 3946024775784901369L;

    /** Point coordinates. */
    private final int[] point;

     * Build an instance wrapping an integer array.
     * <p>The wrapped array is referenced, it is not copied.

* @param point the n-dimensional point in integer space */ public EuclideanIntegerPoint(final int[] point) { this.point = point; } /** * Get the n-dimensional point in integer space. * @return a reference (not a copy!) to the wrapped array */ public int[] getPoint() { return point; } /** {@inheritDoc} */ public double distanceFrom(final EuclideanIntegerPoint p) { return MathArrays.distance(point, p.getPoint()); } /** {@inheritDoc} */ public EuclideanIntegerPoint centroidOf(final Collection<EuclideanIntegerPoint> points) { int[] centroid = new int[getPoint().length]; for (EuclideanIntegerPoint p : points) { for (int i = 0; i < centroid.length; i++) { centroid[i] += p.getPoint()[i]; } } for (int i = 0; i < centroid.length; i++) { centroid[i] /= points.size(); } return new EuclideanIntegerPoint(centroid); } /** {@inheritDoc} */ @Override public boolean equals(final Object other) { if (!(other instanceof EuclideanIntegerPoint)) { return false; } return Arrays.equals(point, ((EuclideanIntegerPoint) other).point); } /** {@inheritDoc} */ @Override public int hashCode() { return Arrays.hashCode(point); } /** * {@inheritDoc} * @since 2.1 */ @Override public String toString() { return Arrays.toString(point); } }

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