Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 *     This file is part of Skiggle, an online handwriting recognition
 *     Java application.
 *     Copyright (C) 2009-2011 Willie Lim <wlim650@gmail.com>
 *
 *     Skiggle is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     Skiggle is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with Skiggle.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

public class Main {
    public static int[] histogram(float[] dataPoints) {

        int[] buckets = { 0, 0, 0, 0, 0 }; // 5 buckets
        float minVal = 1000000.0F;
        float maxVal = -minVal;
        int numOfDataPoints = dataPoints.length;

        // Get the min and max values of the data points
        for (int i = 0; i < numOfDataPoints; i++) {

            minVal = Math.min(minVal, Math.abs(dataPoints[i]));
            maxVal = Math.max(maxVal, Math.abs(dataPoints[i]));
        }

        float bucketSize = (maxVal - minVal) / 5;
        // float bucketSize = 0.002F;

        // Count the number of points for each bucket
        for (int i = 0; i < numOfDataPoints; i++) {

            float val = Math.abs(dataPoints[i]);
            if (val <= minVal + bucketSize)
                buckets[0] = buckets[0] + 1; // between minVal and minVal + bucketSize
            else if (val <= minVal + 2 * bucketSize)
                buckets[1] = buckets[1] + 1; // between minVal and minVal + 2* bucketSize
            else if (val <= minVal + 3 * bucketSize)
                buckets[2] = buckets[2] + 1; // between minVal and minVal + 3* bucketSize
            else if (val <= minVal + 4 * bucketSize)
                buckets[3] = buckets[3] + 1; // between minVal and minVal + 4* bucketSize
            else
                buckets[4] = buckets[4] + 1; // greater than minVal + 4* bucketSize
        }
        return buckets;
    }
}