How to Auto Scale Some but Not All Plots in an Indicator

[Tagliareni]

I'm building an oscillator indicator that has multiple plots.

How do I program some of the plots to Auto Scale and some not to Auto Scale?

For example, if an indicator plots three oscillators in one panel of sizes 10, 25, 100 respectively, how do I program the indicator to Auto Scale the two smallest plots and not the largest?

I want the larger oscillators to 'go off the chart,' while remaining Auto-Scaled on the smaller oscillators on the indicator I'm building.


Thank you!
Matthew

[QuantKey_Bruce]

You can do this by overriding OnCalculateMinMax and only including the plots you are interested in into your calculation of minvalue and maxvalue.

[Tagliareni]

Thank you, friend!
I'm digging into it in the Help Guide.

[Tagliareni]

I'm getting a number of errors centering around issues with OnCalculateMinMax(). Below is the code I'm working with.

Can anyone help me make this three-oscillator indicator Auto Scale on the two smallest plots and not the largest plot, CMO3, please?


public class AutoScaleExample : Indicator
{

private CMO
CMO1,
CMO2,
CMO3;

private double smallestPlotValue = double.MaxValue;
private double largestPlotValue = double.MinValue;

protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = @"AutoScaleExample";
Name = "AutoScaleExample";
Calculate = Calculate.OnBarClose;
IsOverlay = false;

// Disable auto-scaling for the largest CMO plot
IsAutoScale = true;
CMO3.IsAutoScale = false;

DisplayInDataBox = false;
DrawOnPricePanel = true;
DrawHorizontalGridLines = true;
DrawVerticalGridLines = false;
PaintPriceMarkers = false;
ScaleJustification = NinjaTrader.Gui.Chart.ScaleJustification.Right;
//Disable this property if your indicator requires custom values that cumulate with each new market data event.
//See Help Guide for additional information.
IsSuspendedWhileInactive = true;


AddLine(Brushes.HotPink, 0, "ZeroLine");
AddPlot(Brushes.Maroon, "Maroon");
AddPlot(Brushes.Red, "Red");
AddPlot(Brushes.OrangeRed, "OrangeRed");

}
else if (State == State.Configure)
{

}
else if (State == State.DataLoaded)
{
CMO1 = CMO(Close, 10); // Maroon
CMO2 = CMO(Close, 25); // Red
CMO3 = CMO(Close, 100); // OrangeRed

}
}

protected override void OnBarUpdate()
{
MaroonPlot[0] = CMO1[0];
RedPlot[0] = CMO2[0];
OrangeRedPlot[0] = CMO3[0];

}

public override void OnCalculateMinMax()
{
smallestPlotValue = double.MaxValue;
largestPlotValue = double.MinValue;

// For performance optimization, only loop through what is viewable on the chart
for (int index = ChartBars.FromIndex; index <= ChartBars.ToIndex; index++)
{
// Since using Close[0] is not guaranteed to be in sync

// Retrieve "Close" value at the current viewable range index
double plotValue1 = CMO1[index]; double plotValue2 = CMO2[index];

// Find the two smallest plot values
smallestPlotValue = Math.Min(smallestPlotValue, Math.Min(plotValue1, plotValue2));
largestPlotValue = Math.Max(largestPlotValue, Math.Max(plotValue1, plotValue2)); }

// Finally, set the minimum and maximum Y-Axis values to +/- 50 ticks from the primary close value
MinValue = smallestPlotValue - 5 * TickSize;
MaxValue = largestPlotValue + 5 * TickSize;
}


region Properties

[Browsable(false)]
[XmlIgnore]
public Series<double> MaroonPlot
{
get { return Values[0]; }
}

[Browsable(false)]
[XmlIgnore]
public Series<double> RedPlot
{
get { return Values[1]; }
}

[Browsable(false)]
[XmlIgnore]
public Series<double> OrangeRedPlot
{
get { return Values[2]; }
}

#endregion

}

[NinjaTrader_BrandonH]

Hello Tagliareni,

Thanks for your notes.

"I'm getting a number of errors centering around issues with OnCalculateMinMax()."

What exactly do the error messages state?

Please send a screenshot of the error messages so we may accurately assist.

• To send a screenshot with Windows 10 or newer I would recommend using the Windows Snipping Tool.
  • Click here for instructions
• Alternatively to send a screenshot press Alt + PRINT SCREEN to take a screenshot of the selected window. Then go to Start--> Accessories--> Paint, and press CTRL + V to paste the image. Lastly, save it as a jpeg file and send the file as an attachment.
  • Click here for detailed instruction

We look forward to assisting further.