NinjaScript > Language Reference > Common > System Indicator Methods

Description

Block volume detects block trades and display how many occurred per bar. This can be displayed either as trades or volume. Historical tick data is required to plot historically.

Syntax

BlockVolume(int blockSize, CountType countType)

BlockVolume(ISeries<double> input, int blockSize, CountType countType)

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 (?)
blockSize	The minimum volume a trade must be to be considered a block trade
countType	The format to count the block trades. By number of block trades that occurred or total block trade volume

Examples


// A 1 tick data series must be added to OnStateChange() as this indicator runs off of tick data else if (State == State.Configure) { AddDataSeries(Data.BarsPeriodType.Tick, 1); } // Prints the current value of an 80 block trade size counted in volume for the Block Volume if (BarsInProgress == 0) { double value = BlockVolume(80, CountType.Volume)[0]; Print("The current Block Volume value is " + value.ToString()); }

// A 1 tick data series must be added to OnStateChange() as this indicator runs off of tick data
else if (State == State.Configure)
{
AddDataSeries(Data.BarsPeriodType.Tick, 1);
}

// Prints the current value of an 80 block trade size counted in volume for the Block Volume
if (BarsInProgress == 0)
{

double value = BlockVolume(80, CountType.Volume)[0];
Print("The current Block Volume value is " + value.ToString());

}