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1: /* =========================================================== 2: * JFreeChart : a free chart library for the Java(tm) platform 3: * =========================================================== 4: * 5: * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors. 6: * 7: * Project Info: http://www.jfree.org/jfreechart/index.html 8: * 9: * This library is free software; you can redistribute it and/or modify it 10: * under the terms of the GNU Lesser General Public License as published by 11: * the Free Software Foundation; either version 2.1 of the License, or 12: * (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but 15: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17: * License for more details. 18: * 19: * You should have received a copy of the GNU Lesser General Public 20: * License along with this library; if not, write to the Free Software 21: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22: * USA. 23: * 24: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 25: * in the United States and other countries.] 26: * 27: * ------------------------------- 28: * StatisticalCategoryDataset.java 29: * ------------------------------- 30: * (C) Copyright 2002-2007, by Pascal Collet and Contributors. 31: * 32: * Original Author: Pascal Collet; 33: * Contributor(s): David Gilbert (for Object Refinery Limited); 34: * 35: * Changes 36: * ------- 37: * 21-Aug-2002 : Version 1, contributed by Pascal Collet (DG); 38: * 07-Oct-2002 : Fixed errors reported by Checkstyle (DG); 39: * 24-Oct-2002 : Amendments in line with changes to the CategoryDataset 40: * interface (DG); 41: * ------------- JFREECHART 1.0.x --------------------------------------------- 42: * 02-Feb-2007 : Removed author tags from all over JFreeChart sources (DG); 43: * 44: */ 45: 46: package org.jfree.data.statistics; 47: 48: import org.jfree.data.category.CategoryDataset; 49: 50: /** 51: * A category dataset that defines a median and standard deviation value for 52: * each item. 53: */ 54: public interface StatisticalCategoryDataset extends CategoryDataset { 55: 56: /** 57: * Returns the mean value for an item. 58: * 59: * @param row the row index (zero-based). 60: * @param column the column index (zero-based). 61: * 62: * @return The mean value. 63: */ 64: public Number getMeanValue(int row, int column); 65: 66: /** 67: * Returns the mean value for an item. 68: * 69: * @param rowKey the row key. 70: * @param columnKey the columnKey. 71: * 72: * @return The mean value. 73: */ 74: public Number getMeanValue(Comparable rowKey, Comparable columnKey); 75: 76: /** 77: * Returns the standard deviation value for an item. 78: * 79: * @param row the row index (zero-based). 80: * @param column the column index (zero-based). 81: * 82: * @return The standard deviation. 83: */ 84: public Number getStdDevValue(int row, int column); 85: 86: /** 87: * Returns the standard deviation value for an item. 88: * 89: * @param rowKey the row key. 90: * @param columnKey the columnKey. 91: * 92: * @return The standard deviation. 93: */ 94: public Number getStdDevValue(Comparable rowKey, Comparable columnKey); 95: 96: } 97: