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Rate of Change (ROC)

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Description

The Rate of Change (ROC) indicator is a very simple yet effective momentum oscillator that measures the percent change in price from one period to the next. The ROC calculation compares the current price with the price n periods ago.

 

... Courtesy of StockCharts

 

 

Syntax

ROC(int period)
ROC(IDataSeries input, int period)

 

Returns default value
ROC(int period)[int barsAgo]
ROC(IDataSeries input, int period)[int barsAgo]

 

 

Return Value

double; Accessing this method via an index value [int barsAgo] returns the indicator value of the referenced bar.

 

 

Parameters

input

Indicator source data (?)

period

Number of bars used in the calculation

 

 

Examples

// Prints the current value of a 20 period ROC using default price type
double value = ROC(20)[0];
Print("The current ROC value is " + value.ToString());

 

// Prints the current value of a 20 period ROC using high price type
double value = ROC(High, 20)[0];
Print("The current ROC value is " + value.ToString());

 

 

Source Code

You can view this indicator method source code by selecting the menu Tools > Edit NinjaScript > Indicator within the NinjaTrader Control Center window.