/*
* Copyright (C) 2008-2015 by Holger Arndt
*
* This file is part of the Universal Java Matrix Package (UJMP).
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership and licensing.
*
* UJMP is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* UJMP 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with UJMP; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
package org.ujmp.examples;
import org.ujmp.core.Matrix;
import org.ujmp.core.SparseMatrix;
import org.ujmp.core.util.MathUtil;
public class BigSparseMatrixExample {
public static void main(String[] args) throws Exception {
// create a very large sparse matrix
SparseMatrix m1 = SparseMatrix.Factory.zeros(1000000, 500000);
// set some values
m1.setAsDouble(MathUtil.nextGaussian(), 0, 0);
m1.setAsDouble(MathUtil.nextGaussian(), 1, 1);
for (int i = 0; i < 10000; i++) {
m1.setAsDouble(MathUtil.nextGaussian(), MathUtil.nextInteger(0, 1000), MathUtil.nextInteger(0, 1000));
}
// show on screen
m1.showGUI();
// create another matrix
SparseMatrix m2 = SparseMatrix.Factory.zeros(3000000, 500000);
// set some values
m2.setAsDouble(MathUtil.nextGaussian(), 0, 0);
m2.setAsDouble(MathUtil.nextGaussian(), 1, 1);
for (int i = 0; i < 10000; i++) {
m2.setAsDouble(MathUtil.nextGaussian(), MathUtil.nextInteger(0, 1000), MathUtil.nextInteger(0, 1000));
}
// show on screen
m2.showGUI();
// do some operations
Matrix m3 = m1.mtimes(m2.transpose());
// show on screen
m3.showGUI();
}
}