001 /* 002 * Copyright (C) 2008-2010 by Holger Arndt 003 * 004 * This file is part of the Universal Java Matrix Package (UJMP). 005 * See the NOTICE file distributed with this work for additional 006 * information regarding copyright ownership and licensing. 007 * 008 * UJMP is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Lesser General Public License as 010 * published by the Free Software Foundation; either version 2 011 * of the License, or (at your option) any later version. 012 * 013 * UJMP is distributed in the hope that it will be useful, 014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 016 * GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public 019 * License along with UJMP; if not, write to the 020 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 021 * Boston, MA 02110-1301 USA 022 */ 023 024 package org.ujmp.core.doublematrix.calculation.general.misc; 025 026 import org.ujmp.core.Matrix; 027 import org.ujmp.core.MatrixFactory; 028 import org.ujmp.core.doublematrix.calculation.AbstractDoubleCalculation; 029 import org.ujmp.core.doublematrix.calculation.general.statistical.Max; 030 import org.ujmp.core.doublematrix.calculation.general.statistical.Min; 031 import org.ujmp.core.exceptions.MatrixException; 032 033 public class Normalize extends AbstractDoubleCalculation { 034 private static final long serialVersionUID = -1898669824045141350L; 035 036 private Matrix ret = null; 037 038 public Normalize(int dimension, Matrix matrix) { 039 super(dimension, matrix); 040 } 041 042 public double getDouble(long... coordinates) throws MatrixException { 043 if (ret == null) { 044 Matrix max = new Max(getDimension(), getSource()).calcNew(); 045 Matrix min = new Min(getDimension(), getSource()).calcNew(); 046 Matrix range = max.minus(min); 047 Matrix diff = null; 048 switch (getDimension()) { 049 case ROW: 050 diff = getSource().minus(MatrixFactory.vertCat(min, getSource().getRowCount())); 051 break; 052 case COLUMN: 053 diff = getSource().minus(MatrixFactory.horCat(min, getSource().getColumnCount())); 054 break; 055 default: 056 diff = getSource().minus(min); 057 break; 058 } 059 switch (getDimension()) { 060 case ROW: 061 ret = diff.divide(MatrixFactory.vertCat(range, getSource().getRowCount())); 062 break; 063 case COLUMN: 064 ret = diff.divide(MatrixFactory.horCat(range, getSource().getColumnCount())); 065 break; 066 default: 067 ret = diff.divide(range); 068 break; 069 } 070 } 071 072 return ret.getAsDouble(coordinates); 073 } 074 075 }