Module xaos.ui.plot

Package eu.ess.xaos.ui.plot.data

Interface DataReducer<X,Y>

Type Parameters:

X - Type of X values.

Y - Type of Y values.

All Known Implementing Classes:

RamerDouglasPeuckerDataReducer

public interface DataReducer<X,Y>

Defines the behavior of the algorithms used to reduce number of data points to the desired amount.

Author:

claudio.rosati@esss.se

Field Summary

Fields

Modifier and Type	Field	Description
static int	DEFAULT_POINTS_COUNT	Default number of target points: 1000.
static int	MIN_TARGET_POINTS_COUNT	The minimum number of target points: 2.

Method Summary

Modifier and Type	Method	Description
List<XYChart.Data<X,Y>>	reduce(List<XYChart.Data<X,Y>> data, int targetPointsCount)	Reduces the number of the given data points to the specified targetPointsCount, if it is smaller than the data size.

Field Detail

DEFAULT_POINTS_COUNT

static final int DEFAULT_POINTS_COUNT

Default number of target points: 1000.

See Also:

Constant Field Values

MIN_TARGET_POINTS_COUNT

static final int MIN_TARGET_POINTS_COUNT

The minimum number of target points: 2.

See Also:

Constant Field Values

Method Detail

reduce

List<XYChart.Data<X,Y>> reduce(List<XYChart.Data<X,Y>> data,
                                     int targetPointsCount)
                              throws NullPointerException,
                                     IllegalArgumentException

Reduces the number of the given data points to the specified targetPointsCount, if it is smaller than the data size.

Parameters:

data - List of data points to be reduced.

targetPointsCount - The desired number of target points, not smaller than MIN_TARGET_POINTS_COUNT.

Returns:

A List containing reduced data, or the original data list if its size is greater or equal to targetPointsCount.

Throws:

NullPointerException - If data is null.

IllegalArgumentException - If targetPointsCount is less than MIN_TARGET_POINTS_COUNT.