Package de.uka.ipd.sdq.sensorframework.visualisation.rvisualisation.utils

Class REngineHelper

java.lang.Object

de.uka.ipd.sdq.sensorframework.visualisation.rvisualisation.utils.REngineHelper

public class REngineHelper
extends Object

Provides helper method for working with the R engine and the SensorFramework. The class offers methods for feeding sensor data into R and may later also provide methods for more complex commands and calculation.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	REngineHelper.TransferType	Transfer data to R by the specified type.

Field Summary

Fields

Modifier and Type	Field	Description
static final REngineHelper.TransferType	TRANSFER_TYPE	The default setting for data transfer to R.

Constructor Summary

Constructors

Constructor	Description
REngineHelper()

Method Summary

Modifier and Type	Method	Description
static String	storeMeasurementsInRVector(SensorAndMeasurements measurements, int sensorNumber, RReport.TimeseriesData dataSelection, RConnection rConnection)	Convenience method, calls storeMeasurementsInRVector(SensorAndMeasurements, int, TimeseriesData, TransferType, RConnection) with the standard REngineHelper.TransferType which is TransferType.MEMORY.
static String	storeMeasurementsInRVector(SensorAndMeasurements measurements, int sensorNumber, RReport.TimeseriesData dataSelection, REngineHelper.TransferType transferType, RConnection rConnection)	Export the measurements of a sensor to R.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

TRANSFER_TYPE

public static final REngineHelper.TransferType TRANSFER_TYPE

The default setting for data transfer to R.

Constructor Details

REngineHelper

public REngineHelper()

Method Details

storeMeasurementsInRVector

public static String storeMeasurementsInRVector(SensorAndMeasurements measurements,
 int sensorNumber,
 RReport.TimeseriesData dataSelection,
 RConnection rConnection)

Convenience method, calls storeMeasurementsInRVector(SensorAndMeasurements, int, TimeseriesData, TransferType, RConnection) with the standard REngineHelper.TransferType which is TransferType.MEMORY.

Parameters:

measurements - Measurements for a sensor.

sensorNumber - number of the sensor vector in R.

dataSelection - the data element to save.

rConnection - Connection to the R engine.

Returns:

R variable name which contains the data.

storeMeasurementsInRVector

public static String storeMeasurementsInRVector(SensorAndMeasurements measurements,
 int sensorNumber,
 RReport.TimeseriesData dataSelection,
 REngineHelper.TransferType transferType,
 RConnection rConnection)

Export the measurements of a sensor to R. There are two alternatives. The measurements can be transferred via an array, which implies certain size restrictions. An alternative is to use a temporary file. The behavior can only be switched in source code by the constant TRANSFER_TYPE. Variable names in R are as follows:
For timespan data: "sensor" + #
For eventtime data: "sensor" + # + "_ET")

Parameters:

measurements - Measurements for a sensor.

sensorNumber - number of the sensor vector in R.

dataSelection - the data element to save.

rConnection - Connection to the R engine.

Returns:

R variable name which contains the data.