com.jrefinery.data
Interface CategoryDataset

All Superinterfaces:

Dataset, SeriesDataset

All Known Subinterfaces:

IntervalCategoryDataset, MultiIntervalCategoryDataset

All Known Implementing Classes:

DefaultCategoryDataset, DefaultIntervalCategoryDataset, GanttSeriesCollection, JdbcCategoryDataset

public interface CategoryDataset
extends SeriesDataset

The interface for a dataset with one or more series, and values associated with "categories".

The categories are represented by any Java object, with the category label being provided by the toString() method.

The JFreeChart class library uses this interface to obtain data for bar charts and line charts.

Method Summary

java.util.List	getCategories() Returns a list of the categories in the dataset.
int	getCategoryCount() Returns the number of categories in the dataset.
java.lang.Number	getValue(int series, java.lang.Object category) Returns the value for a series and category.

Methods inherited from interface com.jrefinery.data.SeriesDataset

getSeriesCount, getSeriesName

Methods inherited from interface com.jrefinery.data.Dataset

addChangeListener, removeChangeListener

Method Detail

getCategoryCount

int getCategoryCount()

Returns the number of categories in the dataset.

Returns:

The category count.

getCategories

java.util.List getCategories()

Returns a list of the categories in the dataset.

Returns:

The category list.

getValue

java.lang.Number getValue(int series,
                          java.lang.Object category)

Returns the value for a series and category.

Parameters:

series - The series (zero-based index).

category - The category.