Using one indicator within another indicator

[dinoman]

I want to display a few indicators within my primary indicator .. (for example the EMA)
I code the following...

private int mAValue = 20

protected override void Initialize()
{
Add(new Plot(Color.FromKnownColor(KnownColor.Orange), PlotStyle.Line, "Plot0"));
Add(new Plot(Color.Blue, PlotStyle.Line, "MyEMA"));
Overlay = true;
}


protected override void OnBarUpdate()
{
MyEMA.Set(EMA(mAValue)[0]);

yada yada yada….

getting an error when compiling …

An Object reference is required for the non-static field, method, or property "Ninjatrader Indicator. MyEMA.Set(double)

What am I doing wrong?

Thanks

[koganam]

I want to display a few indicators within my primary indicator .. (for example the EMA)
I code the following...

private int mAValue = 20

protected override void Initialize()
{
Add(new Plot(Color.FromKnownColor(KnownColor.Orange), PlotStyle.Line, "Plot0"));
Add(new Plot(Color.Blue, PlotStyle.Line, "MyEMA"));
Overlay = true;
}


protected override void OnBarUpdate()
{
MyEMA.Set(EMA(mAValue)[0]);

yada yada yada….

getting an error when compiling …

An Object reference is required for the non-static field, method, or property "Ninjatrader Indicator. MyEMA.Set(double)

What am I doing wrong?

Thanks

Where and how have you defined the access Properties of MyEMA.

[dinoman]

ok .. you're probably asking the correct question .. I just don't know what access properties are? .. I copied my code from an example in the help guide .. (see below)

Thanks,

Richard

----

protected override void Initialize()
{
// Add two plots
Add(new Plot(Color.Blue, PlotStyle.Line, "Upper"));
Add(new Plot(Color.Orange, PlotStyle.Line, "Lower"));
}
protected override void OnBarUpdate()
{
// Sets values to our two plots
Upper.Set(SMA(High, 20)[0]);
Lower.Set(SMA(Low, 20)[0]);
// Color the Upper plot based on plot value
conditions
if (Rising(Upper))
PlotColors[0][0] = Color.Blue;
else if (Falling(Upper))
PlotColors[0][0] = Color.Red;
else
PlotColors[0][0] = Color.Yellow;
// Color the Lower plot based on plot value
conditions
if (Rising(Lower))
PlotColors[1][0] = Color.Blue;
else if (Falling(Lower))

[NinjaTrader_Bertrand]

Richard, the Plots would be defined / setup via two parts, the visualization options done in Initialize() and the actual public property done in the Properties section of your code, this is found usually in the lower bottom region and needs to be expanded first via clicking on the + sign. If you setup your script from the indicator wizard it would have created a public property for the MyEMA plot already.

[dinoman]

Bertrand .. that did the trick! ... Thank you!

Now, I'm having trouble geting more than one line to show ..
When I just code the EMA plot .. it works great .. but, when I try and add in
Bollinger bands .. only the last Bollinger shows up .. the EMA vaporizes ...

And .. if you know how to change the color of the plots .. I tried but, they
seem to default to Orange .. ?

Here's what I have ..

====

protected override void Initialize()
{
Add(new Plot(Color.FromKnownColor(KnownColor.Orange), PlotStyle.Line, "Plot0"));
Add(new Plot(Color.FromKnownColor(KnownColor.Black), PlotStyle.Line, "MyEMA"));
Add(new Plot(Color.Blue, PlotStyle.Line, "MyBollingerUP"));
Add(new Plot(Color.Blue, PlotStyle.Line, "MyBollingerDN"));
Overlay = true;
}


protected override void OnBarUpdate()
{
MyEMA.Set(EMA(mAValue)[0]);
MyBollingerUP.Set(Bollinger(bollSD, bollPer).Upper[0]);
MyBollingerDN.Set(Bollinger(bollSD, bollPer).Lower[0]);

}

#region Properties
[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries Plot0
{
get { return Values[0]; }
}

[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries MyEMA
{
get { return Values[0]; }
}

[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries MyBollingerUP
{
get { return Values[0]; }
}

[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries MyBollingerDN
{
get { return Values[0]; }
}

[NinjaTrader_Bertrand]

Glad to hear dinoman, each plot would need it's own Value series - please try -

#region Properties
[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries Plot0
{
get { return Values[0]; }
}

[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries MyEMA
{
get { return Values[1]; }
}

[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries MyBollingerUP
{
get { return Values[2]; }
}

[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries MyBollingerDN
{
get { return Values[3]; }
}

[dinoman]

Bertrand ... Another home run! ... Thank you ...!! It's now working just as I want.