Cannot redeclare dataseries for a trailing stop.

[dfarrell]

Hi,

I am trying to create a trailing stop logic (I don't want to use the trailstop method as I don't want my trailing stop to be entered when I initially enter the market, I only want it to kick in when a certain condition becomes true).

But I am finding that once I declare a dataseries, Ninjatrader 7 seems to not allow me to redeclare the dataseries value:.

For example, here is the code I'm looking at:

PHP Code:

//NB This is within if (BarsInProgress == 0) {

//Stop Calculations
            Minmove = TickSize*5;
            if (Xtest[0] >= Closes[0][0]) 
//If xTest (trail stop price) is higher than current price, reset it to current price minus Minmove
            {    
            Xtest.Set(Closes[0][0] -Minmove);
            }
//Else if new xTest would be tighter to current price than current xTest, and/or xTest = zero redeclare at tighter value    
            else if (Closes[0][0] -Minmove] > Xtest[1] || Xtest[0] ==0 )
            {
            Xtest.Set(Closes[0][0] -Minmove);
            }
//Else continue to use same xTest value
            else
            {
            Xtest.Set(Xtest[1]);
            }
            Print("Xtest    " + Xtest[0] + "    Price    "+ Closes[0][0]); 


The output for this does not behave as expected xTest is revalued both higher and lower, always according to the original declared value (current close minus 5 ticks):

Xtest 10759 Price 10764
Xtest 10763 Price 10768
Xtest 10765 Price 10770
Xtest 10765 Price 10770
Xtest 10765 Price 10770

Is there a way around this please? The current results above means that my "trailing stop" simply follows the market and doesn't "lock in" the profit.

Many thanks in advance,

David

[NinjaTrader_Austin]

David, this is simply a matter of convention. You just have to set the historical value differently. The overload you are looking for is this:

DataSeries.Set(int barsAgo, double value);

So to set your DataSeries (dSeries) a value of 100 2 bars back, this would do the trick:

dSeries.Set(2, 100);

[dfarrell]

Hi Austin,

Many thanks for the fast reply.

Are you saying that I can use the code you've provided to redeclare the Dseries? I'm not sure I want to set a historical value; I want to redeclare the Dseries.

Apologies if I've misunderstood.

Kind Regards,

David

[NinjaTrader_Tim]

Hi dfarrell,

Thanks you for posting, someone will reply shortly.

[NinjaTrader_Josh]

dfarrell,

Perhaps this article discussing DataSeries objects will be helpful for you: http://www.ninjatrader-support.com/H...taSeriesObject

What you want to do then is just use .Set(someValue) and set whatever value into it that you would like.