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.missingvalues; 025 026 import org.ujmp.core.Matrix; 027 import org.ujmp.core.doublematrix.calculation.AbstractDoubleCalculation; 028 import org.ujmp.core.doublematrix.calculation.general.statistical.Mean; 029 import org.ujmp.core.exceptions.MatrixException; 030 import org.ujmp.core.util.MathUtil; 031 032 public class ImputeMean extends AbstractDoubleCalculation { 033 private static final long serialVersionUID = -3749987323095497386L; 034 035 private Matrix mean = null; 036 037 public ImputeMean(int dimension, Matrix matrix) { 038 super(dimension, matrix); 039 } 040 041 public double getDouble(long... coordinates) throws MatrixException { 042 if (mean == null) { 043 mean = new Mean(getDimension(), true, getSource()).calcNew(); 044 } 045 double v = getSource().getAsDouble(coordinates); 046 if (MathUtil.isNaNOrInfinite(v)) { 047 switch (getDimension()) { 048 case ALL: 049 return mean.getAsDouble(0, 0); 050 case ROW: 051 return mean.getAsDouble(0, coordinates[COLUMN]); 052 case COLUMN: 053 return mean.getAsDouble(coordinates[ROW], 0); 054 } 055 } else { 056 return v; 057 } 058 return 0.0; 059 } 060 061 }