Indicator calling another Indicator with new DataSeries(this)

[ihercules]

I am calling an existing custom indicator that has "new DataSeries(this)". I get an error "System.NullReferenceException: Object reference not set to an instance of an object" within OnBarUpdate()

Using this custom indicator by itself plots the values correctly on the chart without causing the error to occur. Please help!


private int period = 21;
public DataSeries TmpDataSeries;

protected override void Initialize()
{
Add(new Plot(Color.Green, "TmpAngle"));
CalculateOnBarClose = true;
Overlay = false;
TmpDataSeries = new DataSeries(this);
}

protected override void OnBarUpdate()
{

TmpDataSeries.Set(ChartControl.GetYByValue(Bars,SM A(period)[0]));
.
.
.

}

[koganam]

I am calling an existing custom indicator that has "new DataSeries(this)". I get an error "System.NullReferenceException: Object reference not set to an instance of an object" within OnBarUpdate()

Using this custom indicator by itself plots the values correctly on the chart without causing the error to occur. Please help!


private int period = 21;
public DataSeries TmpDataSeries;

protected override void Initialize()
{
Add(new Plot(Color.Green, "TmpAngle"));
CalculateOnBarClose = true;
Overlay = false;
TmpDataSeries = new DataSeries(this);
}

protected override void OnBarUpdate()
{

TmpDataSeries.Set(ChartControl.GetYByValue(Bars,SM A(period)[0]));
.
.
.

}

You will have to think up some new logic if you want to be able to call that from any other class. When called from another class, a ChartControl does not exist, so if you are setting a DataSeries with a call to ChartControl, you are dead in the water.

[ihercules]

Thanks! I will code it with an alternate approach