See: Description

| Interface | Description | 
|---|---|
| Projector | A projector is responsible for adding projections to the visualization. | 
| ProjectorFactory | A projector is responsible for adding projections to the visualization by
 detecting appropriate relations in the database. | 
| Class | Description | 
|---|---|
| HistogramFactory | Produce one-dimensional projections. | 
| HistogramFactory.Parameterizer | Parameterization class. | 
| HistogramProjector<V extends NumberVector<?>> | ScatterPlotProjector is responsible for producing a set of scatterplot
 visualizations. | 
| OPTICSProjector<D extends Distance<D>> | Projection for OPTICS plots. | 
| OPTICSProjectorFactory | Produce OPTICS plot projections | 
| ParallelPlotFactory | Produce parallel axes projections. | 
| ParallelPlotProjector<V extends NumberVector<?>> | ParallelPlotProjector is responsible for producing a parallel axes
 visualization. | 
| ScatterPlotFactory | Produce scatterplot projections. | 
| ScatterPlotFactory.Parameterizer | Parameterization class. | 
| ScatterPlotProjector<V extends NumberVector<?>> | ScatterPlotProjector is responsible for producing a set of scatterplot
 visualizations. | 
Projectors are responsible for finding appropriate projections for data relations.