Java Matrix Sum sumArrays(double a[][], double b[][], String sign)

Description

Sum of the values in the array.

License

Open Source License

Parameter

Parameter	Description
a	the a
b	the b
sign	the sign

Return

the double[][]

Declaration

public static double[][] sumArrays(double a[][], double b[][], String sign) 

Method Source Code

//package com.java2s;
/*//from w w w  .ja  va2s .  c  o m
 * This file is part of TiPi (a Toolkit for Inverse Problems and Imaging)
 * developed by the MitiV project.
 *
 * Copyright (c) 2014 the MiTiV project, http://mitiv.univ-lyon1.fr/
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

public class Main {
    /**
     * Sum of the values in the array.
     *
     * @param a the a
     * @param b the b
     * @param sign the sign
     * @return the double[][]
     */
    public static double[][] sumArrays(double a[][], double b[][], String sign) {
        int H = a.length;
        int W = a[0].length;
        double out[][] = new double[H][W];
        if (sign == "+") {
            for (int j = 0; j < W; j++) {
                for (int i = 0; i < H; i++) {
                    out[i][j] = a[i][j] + b[i][j];
                }
            }
        } else {
            for (int j = 0; j < W; j++) {
                for (int i = 0; i < H; i++) {
                    out[i][j] = a[i][j] - b[i][j];
                }
            }
        }
        return out;
    }
}

Related

1. sum(double[][] X, int axis)
2. sum(float[][] a1, float[][] a2)
3. sum(int M[][])
4. sum(int[][][] X, int[] coords)
5. sumArrayDim(double[][] array, int dimToSummarize)
6. sumAxis1(double[][] X)
7. sumCols(boolean[][] inputMatrix)
8. sumDimension(double[][] matrix, int dim)
9. SumIntegrateHistogram_25(float[][][] histo_array)