Package trade.invision.indicators.indicators.previous

Class PreviousPercentChange

java.lang.Object

trade.invision.indicators.indicators.Indicator<Num>

trade.invision.indicators.indicators.previous.PreviousRatio

trade.invision.indicators.indicators.previous.PreviousPercentChange

Direct Known Subclasses:

ClosePricePercentChange, VolumePercentChange

public class PreviousPercentChange
extends PreviousRatio

PreviousPercentChange is a Num Indicator to provide the percent change of the current value from the n-th previous value. This is also referred to as Rate of Change (ROC) or Momentum. The percentage is represented as a fractional. For example, a provided value of 0.15 would represent 15%.

Nested Class Summary

Nested classes/interfaces inherited from class trade.invision.indicators.indicators.Indicator

Indicator.CacheSeries

Field Summary

Fields inherited from class trade.invision.indicators.indicators.Indicator

cachedAddCallCount, cachedIndex, cachedValue, cacheSeries, minimumStableIndex, series

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PreviousPercentChange(Indicator<Num> indicator, int n)

Method Summary

Modifier and Type	Method	Description
protected Num	calculate(long index)	Performs the calculation of this Indicator at the given index.
static PreviousPercentChange	previousPercentChange(Indicator<Num> indicator)	Calls previousPercentChange(Indicator, int) with n set to 1.
static PreviousPercentChange	previousPercentChange(Indicator<Num> indicator, int n)	Gets a PreviousPercentChange.

Methods inherited from class trade.invision.indicators.indicators.previous.PreviousRatio

previousRatio, previousRatio

Methods inherited from class trade.invision.indicators.indicators.Indicator

caching, getMinimumStableIndex, getSeries, getValue, isCaching, numOf, numOf, numOf, numOf, numOfEight, numOfFive, numOfFour, numOfHalf, numOfHundred, numOfHundredth, numOfNegativeOne, numOfNine, numOfOne, numOfSeven, numOfSix, numOfTen, numOfTenth, numOfThousand, numOfThousandth, numOfThree, numOfTwo, numOfZero, purgeCache

Methods inherited from class java.lang.Object

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

Constructor Details

PreviousPercentChange

protected PreviousPercentChange(Indicator<Num> indicator,
 int n)

Method Details

previousPercentChange

public static PreviousPercentChange previousPercentChange(Indicator<Num> indicator)

Calls previousPercentChange(Indicator, int) with n set to 1.

previousPercentChange

public static PreviousPercentChange previousPercentChange(Indicator<Num> indicator,
 int n)

Gets a PreviousPercentChange.

Parameters:

indicator - the Num Indicator

n - the previous n-th value to look back at

calculate

protected Num calculate(long index)

Description copied from class: Indicator

Performs the calculation of this Indicator at the given index.

Overrides:

calculate in class PreviousRatio

Parameters:

index - the index

Returns:

the result (never null)