001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
006 *
007 * Project Info: http://www.jfree.org/jfreechart/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it
010 * under the terms of the GNU Lesser General Public License as published by
011 * the Free Software Foundation; either version 2.1 of the License, or
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
022 * USA.
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025 * in the United States and other countries.]
026 *
027 * -------------------------------
028 * StatisticalCategoryDataset.java
029 * -------------------------------
030 * (C) Copyright 2002-2007, by Pascal Collet and Contributors.
031 *
032 * Original Author: Pascal Collet;
033 * Contributor(s): David Gilbert (for Object Refinery Limited);
034 *
035 * $Id: StatisticalCategoryDataset.java,v 1.2.2.2 2007/02/02 15:50:24 mungady Exp $
036 *
037 * Changes
038 * -------
039 * 21-Aug-2002 : Version 1, contributed by Pascal Collet (DG);
040 * 07-Oct-2002 : Fixed errors reported by Checkstyle (DG);
041 * 24-Oct-2002 : Amendments in line with changes to the CategoryDataset
042 * interface (DG);
043 * ------------- JFREECHART 1.0.x ---------------------------------------------
044 * 02-Feb-2007 : Removed author tags from all over JFreeChart sources (DG);
045 *
046 */
047
048 package org.jfree.data.statistics;
049
050 import org.jfree.data.category.CategoryDataset;
051
052 /**
053 * A category dataset that defines a median and standard deviation value for
054 * each item.
055 */
056 public interface StatisticalCategoryDataset extends CategoryDataset {
057
058 /**
059 * Returns the mean value for an item.
060 *
061 * @param row the row index (zero-based).
062 * @param column the column index (zero-based).
063 *
064 * @return The mean value.
065 */
066 public Number getMeanValue(int row, int column);
067
068 /**
069 * Returns the mean value for an item.
070 *
071 * @param rowKey the row key.
072 * @param columnKey the columnKey.
073 *
074 * @return The mean value.
075 */
076 public Number getMeanValue(Comparable rowKey, Comparable columnKey);
077
078 /**
079 * Returns the standard deviation value for an item.
080 *
081 * @param row the row index (zero-based).
082 * @param column the column index (zero-based).
083 *
084 * @return The standard deviation.
085 */
086 public Number getStdDevValue(int row, int column);
087
088 /**
089 * Returns the standard deviation value for an item.
090 *
091 * @param rowKey the row key.
092 * @param columnKey the columnKey.
093 *
094 * @return The standard deviation.
095 */
096 public Number getStdDevValue(Comparable rowKey, Comparable columnKey);
097
098 }
099