de.lmu.ifi.dbs.elki.utilities.scaling
Class ClipScaling

java.lang.Object
  de.lmu.ifi.dbs.elki.utilities.scaling.ClipScaling

All Implemented Interfaces:

InspectionUtilFrequentlyScanned, Parameterizable, ScalingFunction, StaticScalingFunction

public class ClipScaling
extends Object
implements StaticScalingFunction

Scale implementing a simple clipping. Values less than the specified minimum will be set to the minimum, values larger than the maximum will be set to the maximum.

Nested Class Summary

static class

ClipScaling.Parameterizer Parameterization class.

Field Summary

private Double	max Field storing the maximum to use
static OptionID	MAX_ID Parameter to specify the maximum value Key: -clipscale.max
private Double	min Field storing the minimum to use
static OptionID	MIN_ID Parameter to specify a fixed minimum to use.

Constructor Summary

ClipScaling(Double min, Double max)
Constructor.

Method Summary

double	getMax() Get maximum resulting value.
double	getMin() Get minimum resulting value.
double	getScaled(double value) Transform a given value using the scaling function.

Methods inherited from class java.lang.Object

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

Field Detail

MIN_ID

public static final OptionID MIN_ID

Parameter to specify a fixed minimum to use.

Key: -clipscale.min

MAX_ID

public static final OptionID MAX_ID

Parameter to specify the maximum value

Key: -clipscale.max

min

private Double min

Field storing the minimum to use

max

private Double max

Field storing the maximum to use

Constructor Detail

ClipScaling

public ClipScaling(Double min,
                   Double max)

Constructor.

Parameters:

min - Minimum, may be null

max - Maximum, may be null

Method Detail

getScaled

public double getScaled(double value)

Description copied from interface: ScalingFunction

Transform a given value using the scaling function.

Specified by:

getScaled in interface ScalingFunction

Parameters:

value - Original value

Returns:

Scaled value

getMin

public double getMin()

Description copied from interface: ScalingFunction

Get minimum resulting value. May be Double.NaN or Double.NEGATIVE_INFINITY.

Specified by:

getMin in interface ScalingFunction

Returns:

Minimum resulting value.

getMax

public double getMax()

Description copied from interface: ScalingFunction

Get maximum resulting value. May be Double.NaN or Double.POSITIVE_INFINITY.

Specified by:

getMax in interface ScalingFunction

Returns:

Maximum resulting value.