StatisticalCategoryDataset


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2    * JFreeChart : a free chart library for the Java(tm) platform
3    * ===========================================================
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5    * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
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12   * (at your option) any later version.
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14   * This library is distributed in the hope that it will be useful, but 
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25   *
26   * -------------------------------
27   * StatisticalCategoryDataset.java
28   * -------------------------------
29   * (C) Copyright 2002-2005, by Pascal Collet and Contributors.
30   *
31   * Original Author:  Pascal Collet;
32   * Contributor(s):   David Gilbert (for Object Refinery Limited);
33   *
34   * $Id: StatisticalCategoryDataset.java,v 1.2 2005/02/01 11:59:30 mungady Exp $
35   *
36   * Changes
37   * -------
38   * 21-Aug-2002 : Version 1, contributed by Pascal Collet (DG);
39   * 07-Oct-2002 : Fixed errors reported by Checkstyle (DG);
40   * 24-Oct-2002 : Amendments in line with changes to the CategoryDataset 
41   *               interface (DG);
42   *
43   */
44  
45  package org.jfree.data.statistics;
46  
47  import org.jfree.data.category.CategoryDataset;
48  
49  /**
50   * A category dataset that defines a median and standard deviation value for 
51   * each item.
52   *
53   * @author Pascal Collet
54   */
55  public interface StatisticalCategoryDataset extends CategoryDataset {
56  
57      /**
58       * Returns the mean value for an item.
59       *
60       * @param row  the row index (zero-based).
61       * @param column  the column index (zero-based).
62       *
63       * @return The mean value.
64       */
65      public Number   getMeanValue(int row, int column);
66  
67      /**
68       * Returns the mean value for an item.
69       *
70       * @param rowKey  the row key.
71       * @param columnKey  the columnKey.
72       *
73       * @return The mean value.
74       */
75      public Number   getMeanValue(Comparable   rowKey, Comparable   columnKey);
76  
77      /**
78       * Returns the standard deviation value for an item.
79       *
80       * @param row  the row index (zero-based).
81       * @param column  the column index (zero-based).
82       *
83       * @return The standard deviation.
84       */
85      public Number   getStdDevValue(int row, int column);
86  
87      /**
88       * Returns the standard deviation value for an item.
89       *
90       * @param rowKey  the row key.
91       * @param columnKey  the columnKey.
92       *
93       * @return The standard deviation.
94       */
95      public Number   getStdDevValue(Comparable   rowKey, Comparable   columnKey);
96  
97  }
98  
99
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