Java Double Number Truncate truncateRows(double[][] matrix, int nCols)

Description

copy only first nCols of matrix

License

Open Source License

Parameter

Parameter	Description
matrix	a parameter
nCols	a parameter

Return

copy with first nCols

Declaration

public static double[][] truncateRows(double[][] matrix, int nCols) 

Method Source Code

//package com.java2s;
/*/* w  w  w  . j a v a2s. c  om*/
 *  Copyright (C) 2017 Daniel H. Huson
 *
 *  (Some files contain contributions from other authors, who are then mentioned separately.)
 *
 *  This program 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.
 *
 *  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    /**
     * copy only first nCols of matrix
     *
     * @param matrix
     * @param nCols
     * @return copy with first nCols
     */
    public static double[][] truncateRows(double[][] matrix, int nCols) {
        final int nRows = matrix.length;
        final double[][] result = new double[nRows][nCols];
        for (int row = 0; row < nRows; row++) {
            System.arraycopy(matrix[row], 0, result[row], 0, nCols);
        }
        return result;
    }
}

Related

1. truncateDoubleDecimals(double x1, int num)
2. truncateDoubleToInt(double p_76140_0_)
3. truncateDoubleToInt(double x)
4. truncateNaN(double[] values)
5. truncateNoSciNotation(double d, int decimals)
6. truncateToTwoDecimals(double value)
7. truncDouble(double val)
8. truncDouble(Double value, int decimals)