Referencing an indicator with an enum

[Sim22]

I have an indicator called 'jhlMA' which allows the choice of several moving average methods via an 'enum' and a 'switch'.

Say, for example, I want to reference this indicator within a strategy or another indicator's NinjaScript. I know with a standard SMA I would use:

double simple = SMA(Input,20)[0];

The jhlMA includes an 'enum' and a 'switch', the enum is below:

public enum MAType 

		{
		EMA,
		JMA,
		HMA,
		LinReg,
		MMA,
		SMA,
		TMA,
		WMA,
		McGinleyDynamic,
		Butterworth2,
		Butterworth3
		}

So when I reference this in my strategy/indicator I need to say:

double whatever = jhlMA(??????,int period)[0];

It wants me to input the enum method where the '??????' is.

I assume it wants 'MAType' but I'm not sure about the correct syntax to use:

double whatever = jhlMA(MAType(),int period)[0]; //???
double whatever = jhlMA(jhlMA.MAType,int period)[0]; //???
double whatever = jhlMA(MAType(),int period)[0]; //???

I've tried but I can't work it out. I have several of these to reference so to get this one under my belt would be great. Thanks in advance

[NinjaTrader_Bertrand]

Welcome to our forums - have you tried MAType.SMA for example for the call?

[Sim22]

It seems to want either of these statements instead if I allow intellisense to help me:

double myjhl = JHL.Utility.MA.construct(MAType type, int period)
double myjhl = JHL.Utility.MAType.SMA

I am still fairly new to C# but I have a basic idea of classes, objects and instances.

"JHL.Utility" is the namespace. "JHL.Utility.MA" is the class.
I have a feeling that 'JHL.Utility.MAType.SMA' should be placed where MAType is:

double myjhl = JHL.Utility.MA.construct(JHL.Utility.MAType.SMA,20);

On trying this I get error CS0029 "Cannot implicitly convert JHL.Utility.MA to double".

I assume this means an 'override' [0] needs to be placed in here somewhere. Am I close?

I still get a little confused with C# "calling". Thanks again.

[Sim22]

Okay. I think I've missed some important code. I copied from another indicator's ideas and I did this:

I added this to the variable section

private jhlMA myjhl;

OnStartUp() section

//myjhl = jhlMA(JHL.Utility.MAType.SMA,20);

OnBarUpdate() section

Value.Set(myjhl[0]);

I'm getting a plot, but it's "0". This might be due to the jhlMA throwing a "Null" at startup error. So going with this code, does this look right. I'm sorry for the confusion.

[NinjaTrader_Bertrand]

Sim22, thanks for the follow up, but reviewing this further I think you're missing code actually here - with the cs you posted you're just having the one supplying the utility methods but not the main SMA / average logic to build on. Best would be perhaps getting in touch with the original author, as I don't think the usage was meant this way.

[Sim22]

Thanks Bertrand,

I actually chose this indicator as an example to get help for enumerations. I actually have at least a couple of other indicators of my own in which to reference but don't know how to do it. However, I will get in touch with the author as you suggested. Cheers.

[NinjaTrader_Bertrand]

Right, and I don't think the enum call is the issue here - the utility code itself as is would not be sufficient to make this work.

For working with enums generally, this sample would be helpful - http://www.ninjatrader.com/support/f...ead.php?t=3420