New here - How to subtract two Indicators?

[stefy]

Hi everyone,

Just installed NJ and loving it.

I tried to build a simple custom indicator, based on the difference of two RSI (on different length), but I cannot build it using the double function:
double RS1 = RSI...
double RS2 = RSI...
double diff = RS1 - RS2

I get "Cannot implicitly convert type Ninjatrader.Indicator.RSI to double CS0029.

I understand I cannot use double to subtract two indicators, but how am I supposed to do?

Thank you everyone for help

[NinjaTrader_Dierk]

Unfortunately this is not supported. You would need to implement a custom indicator which subtracts these values data point by data point and stuffs the result in its own plot/data series.

[stefy]

Originally Posted by NinjaTrader_Dierk

Unfortunately this is not supported. You would need to implement a custom indicator which subtracts these values data point by data point and stuffs the result in its own plot/data series.

Thank you NJ_Dierk

Could you explain (with an example or with a similar indicator) how to do that?
Otherwise I don't think I will manage to move forward...

[NinjaTrader_Dierk]

I suggest ripping through our indicator code samples and the references and tips here:
http://www.ninjatrader-support.com/v...splay.php?f=30
http://www.ninjatrader-support.com/v...splay.php?f=31

[stefy]

Following the tutorials:

1) I introduced the variables:
#region Variables

private DataTimeSeries RSI1;
DataTimeSeries RSI2;

#endregion

2) I declared the variables:

RSI1.Set(RSI(...));
RSI2.Set(RSI(...));
RSI1 = new DateTimeSeries(this);
RSI2 = new DateTimeSeries(this);

double diff = RSI1 - RSI2;


Yet, it doesn't work!

Who can help me with an example?

Thank you everyone

[NinjaTrader_Ray]

Please import the attached via Files > Utilities and review the source code.