IPenDatasourceFactory

All Known Implementing Classes:

LinearRegressionPenDatasource.LinearRegressionFactory, MovingAveragePenDatasource.MovingAvgFactory, MultiplyPenDatasource.MultiplyFunctionFactory, QueryGroupKey, RunningSumPenDatasource.RunningSumFunctionFactory, SpcPenDatasource.SpcFuncFactory, SumDiffPenDatasource.SumDiffPenFunctionFactory, TagQueryGroup
```
public interface IPenDatasourceFactory
```
Instances of this class have two uses. 1) They need to be hashable so that pens can be grouped by the datasource factory that they return, and 2) They create pen datasources, of course.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`IPenDatasource`	`createDatasource()`	Create the IPenDatasource that will provide data for each pen.
`IHistogramDatasource`	`createHistogram()`	Create a histogram datasource for the pens, if any.

- Method Detail
  - createDatasource
```
IPenDatasource createDatasource()
```
    Create the IPenDatasource that will provide data for each pen.
  - createHistogram
```
IHistogramDatasource createHistogram()
```
    Create a histogram datasource for the pens, if any. (May return null for no histogram support)