CategoryDataset interface and related classes.
| CategoryDataset | The interface for a dataset with one or more series, and values associated with categories. |
| CategoryRangeInfo | An interface that can (optionally) be implemented by a dataset to assist in determining the minimum and maximum y-values. |
| IntervalCategoryDataset | A category dataset that defines a value range for each series/category combination. |
| CategoryToPieDataset | A PieDataset implementation that obtains its data from one row or
column of a CategoryDataset. |
| DefaultCategoryDataset | A default implementation of the CategoryDataset interface. |
| DefaultIntervalCategoryDataset | A convenience class that provides a default implementation of the
IntervalCategoryDataset interface. |
| SlidingCategoryDataset | A CategoryDataset implementation that presents a subset of the
categories in an underlying dataset. |