Connect Indicator A to an instance of Indicator B on a single chart

[ptpatrader]

Hi-

Lets say I have two custom indicators, A and B. I add three B indicators to a chart, each with different params set in the editor. When I add Indicator A, I want to be able to choose from a list one of the three B indicators. The obvious solution is to traverse the Indicators on the ChartControl, but during the construction ChartControl is not available - its null. I then dont know how to provide a selector to choose from a set of B indicators, so that I can set 1 on indicator A. In indicator A I have a property, SelectedB, but to get this to provide a list, I had to make it of type IList<IndicatorB>. When the user selects one in the actual property editor in the chart, I want a single instance to be set.

Any advice or example indicators that do this I can reference?

Thanks,

Nick.

[NinjaTrader_ChrisL]

Hi Nick, thanks for your note.

If you want to have the user be able to select one of the three instances you can add an enum list as a property and only instantiate the indicator you need based on what that is set to. See this example of creating an enum selector:

https://ninjatrader.com/support/helpGuides/nt8/?creating_a_user-defined_parame.htm

Please let me know if you have any questions.

[ptpatrader]

Thanks for the reply Chris. This is not going to work, but thanks for sending it over.

Nick.

[NinjaTrader_Jim]

Hello ptptrader,

Could you elaborate on how this would not achieve the goal?

As I understand, Indicator A could add an enum to select Indicator B, and then Indicator B would use a Values Series from Indicator A as input so it calculates from Indicator A. Indicator B would then have to have its plots presented in plots added to Indicator A if you would like to see the data.

We look forward to assisting.