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.statistical; 025 026 import org.ujmp.core.Matrix; 027 import org.ujmp.core.annotation.Annotation; 028 import org.ujmp.core.annotation.DefaultAnnotation; 029 import org.ujmp.core.doublematrix.calculation.AbstractDoubleCalculation; 030 import org.ujmp.core.exceptions.MatrixException; 031 032 public class Max extends AbstractDoubleCalculation { 033 private static final long serialVersionUID = -132801357103800951L; 034 035 public Max(int dimension, Matrix matrix) { 036 super(dimension, matrix); 037 Annotation aold = matrix.getAnnotation(); 038 if (aold != null) { 039 Annotation a = new DefaultAnnotation(getSize()); 040 a.setMatrixAnnotation(aold.getMatrixAnnotation()); 041 if (dimension == ROW) { 042 a.setDimensionMatrix(ROW, aold.getDimensionMatrix(ROW)); 043 } else if (dimension == COLUMN) { 044 a.setDimensionMatrix(COLUMN, aold.getDimensionMatrix(COLUMN)); 045 } 046 setAnnotation(a); 047 } 048 } 049 050 public double getDouble(long... coordinates) throws MatrixException { 051 double max = -Double.MAX_VALUE; 052 switch (getDimension()) { 053 case ROW: 054 for (long r = getSource().getSize()[ROW] - 1; r != -1; r--) { 055 double v = getSource().getAsDouble(r, coordinates[COLUMN]); 056 if (v > max) { 057 max = v; 058 } 059 } 060 max = max == -Double.MAX_VALUE ? Double.NaN : max; 061 return max; 062 case COLUMN: 063 for (long c = getSource().getSize()[COLUMN] - 1; c != -1; c--) { 064 double v = getSource().getAsDouble(coordinates[ROW], c); 065 if (v > max) { 066 max = v; 067 } 068 } 069 max = max == -Double.MAX_VALUE ? Double.NaN : max; 070 return max; 071 case ALL: 072 for (long r = getSource().getSize()[ROW] - 1; r != -1; r--) { 073 for (long c = getSource().getSize()[COLUMN] - 1; c != -1; c--) { 074 double v = getSource().getAsDouble(r, c); 075 if (v > max) { 076 max = v; 077 } 078 } 079 } 080 max = max == -Double.MAX_VALUE ? Double.NaN : max; 081 return max; 082 } 083 return 0.0; 084 } 085 086 public long[] getSize() { 087 switch (getDimension()) { 088 case ROW: 089 return new long[] { 1, getSource().getSize()[COLUMN] }; 090 case COLUMN: 091 return new long[] { getSource().getSize()[ROW], 1 }; 092 case ALL: 093 return new long[] { 1, 1 }; 094 default: 095 throw new MatrixException("dimension not supported: " + getDimension()); 096 } 097 } 098 099 public static double calc(Matrix m) throws MatrixException { 100 double max = -Double.MAX_VALUE; 101 double v = 0.0; 102 for (long[] c : m.availableCoordinates()) { 103 max = (v = m.getAsDouble(c)) > max ? v : max; 104 } 105 max = max == -Double.MAX_VALUE ? Double.NaN : max; 106 return max; 107 } 108 }