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.exceptions.MatrixException;
029    import org.ujmp.core.util.MathUtil;
030    
031    public class CountMissing extends AbstractDoubleCalculation {
032            private static final long serialVersionUID = -8720603522373221865L;
033    
034            public CountMissing(int dimension, Matrix matrix) {
035                    super(dimension, matrix);
036            }
037    
038            
039            public double getDouble(long... coordinates) throws MatrixException {
040                    double sum = 0;
041                    switch (getDimension()) {
042                    case ROW:
043                            for (long r = getSource().getSize()[ROW] - 1; r != -1; r--) {
044                                    sum += MathUtil.isNaNOrInfinite(getSource().getAsDouble(r, coordinates[COLUMN])) ? 1 : 0;
045                            }
046                            return sum;
047                    case COLUMN:
048                            for (long c = getSource().getSize()[COLUMN] - 1; c != -1; c--) {
049                                    sum += MathUtil.isNaNOrInfinite(getSource().getAsDouble(coordinates[ROW], c)) ? 1 : 0;
050                            }
051                            return sum;
052                    case ALL:
053                            for (long r = getSource().getSize()[ROW] - 1; r != -1; r--) {
054                                    for (long c = getSource().getSize()[COLUMN] - 1; c != -1; c--) {
055                                            sum += MathUtil.isNaNOrInfinite(getSource().getAsDouble(r, c)) ? 1 : 0;
056                                    }
057                            }
058                            return sum;
059                    }
060                    return 0.0;
061            }
062    
063            
064            public long[] getSize() {
065                    switch (getDimension()) {
066                    case ROW:
067                            return new long[] { 1, getSource().getSize()[COLUMN] };
068                    case COLUMN:
069                            return new long[] { getSource().getSize()[ROW], 1 };
070                    case ALL:
071                            return new long[] { 1, 1 };
072                    }
073                    return null;
074            }
075    
076    }