How to call a custom indicator into another custom indcator as a ISeries<double>

[alanlopen]

I am new to C# and Ninjatrader.


I have 2 custom indicators. For simplicity I wil expose my problem like this : One is very simple. it is a copy of the official EMA.cs and I call it EMA_CUSTOM.
Now I want to call EMA_CUSTOM inside My_cutom_indi_2 but it needs to be as a iSeries, because afterwards I take again the EMA of this, by calling EMA( my custom ISeries<double>, some period).

In My_cutom_indi_2, I call various indicators like this :

namespace NinjaTrader.NinjaScript.Indicators
{
public class My_cutom_indi_2: Indicator
{

< lots of things >

protected ISeries<double> _Average;
protected ISeries<double> choose_MA(int param_1, int parma_2, double param_3)
{
switch(param_1)
{
case custom_enum.enum_1 :
_Average=EMA_CUSTOM(parma_2, param_3);
break;
case custom_enum.enum_2 :​
_Average=EMA(parma_2);
break;
case custom_enum.enum_3 :​​
_Average=HMA(parma_2);
break;
}
return _Average;
}

<lots of things >

THen in OnBarUpdate(), I call choose_MA and I put it in the official EMA again :

Values[0] = EMA(choose_MA( param_1 , param_2, param_3 ), some_period )[0];

Now the error of the Editor is : CS013. The name EMA_CUSTOM does not exist in the current context

In the folder D:\Documents\NinjaTrader 8\bin\Custom\Indicators, I do Have the file EMA_CUSTOM.cs

Both my custom indicators do compile and print on the chart when I comment out ''_Average=EMA_CUSTOM(parma_2, param_3);'' in the switch of choose_MA in My_cutom_indi_2

[NinjaTrader_Jesse]

Hello alanlopen,

I would suggest using the strategy builder to generate the code that you need to call the indicator. If you use your indicator in a condition and then click view code it will show the generated indicator code. You can then copy/paste the generated parts of the code relating to the indicator to use it in your existing indicator.

[alanlopen]

I dont'use any strategy. THe two scripts are really 2 indicators. When you talk about ''strategy builder'', you mean the ''new indciator'' wizard ?

I forgot to say I am new to NT and C#

[alanlopen]

okay i solved it.

My error was that I copy pasted the official EMA.cs, then replaced all occurences of ''EMA"' by ""CUSTOM_EMA". and apprently the underscore was problematic. Once I remove it, and compile again CUSTOM_EMA, then second indicator My_cutom_indi_2 with CUSTOM_EMA replaced by CUSTOMEMA, the script My_cutom_indi_2 compiled