| Area |  | 
| Axis |  | 
| CommentText |  | 
| DownSampler | A class that implement a downsampler, used to reduce the number of point to display. | 
| DownSampler.DataSet |  | 
| ElementsNames | The elements of the graph. | 
| ImageParameters |  | 
| ImageWorker |  | 
| LegendText |  | 
| Line |  | 
| Mapper |  | 
| Markers |  | 
| PlotElement |  | 
| RrdGraph | Class which actually creates Rrd4j graphs (does the hard work). | 
| RrdGraphConstants | Class to represent various constants used for graphing. | 
| RrdGraphConstants.FontTag |  | 
| RrdGraphDef | Class which should be used to define new Rrd4j graph. | 
| RrdGraphDef.ImageSource | Implementations of this class can be used to generate image than can be
 layered on graph. | 
| RrdGraphInfo | Class to represent successfully created Rrd4j graph. | 
| Rule |  | 
| Source |  | 
| SourcedPlotElement |  | 
| Span |  | 
| TimeAxisSetting |  | 
| TimeLabelFormat | Simplified version of DateFormat for just defining how to map a timestamp into a label for
 presentation. | 
| ValueAxisSetting |  | 
| ValueScaler |  | 
| ValueScaler.Scaled |  |