Access Tick Data within BarsInProgress minute loop

September 10th, 2016, 08:35 PM

Hello

I am writing an indicator in which have the requirements of COBC = true
Most everything is on Close to collect values

But there is a part of the indicator when I evaluate everything and then it has a condition that when price hits a certain level, I want this to be updated tick by tick

Code

private BoolSeries entryCondition = null;
private double fibLevel;
private bool signal = false;

protected override void Initialize()
{
   entryCondition = new BoolSeries(this);
   Add(PeriodType.Tick, 1);
}
// and then in OnBarUpdate I have to separate them
// let's just say for sake of argument the entryCondition and the fibLevel are  already "set" somewhere else

protected override void OnBarUpdate()
{
    if (CurrentBars[0] > 3)
    {
        if (BarsInProgress == 0) // for the base chart
        {
              if (entryCondition[0])
              {
                   // now I want to monitor price by tick by tick
                   // as soon as it hits the fib level 
                  // 
                  if (BarsInProgress == 1) // tick series
                  {
                       if (Highs[0][1] > fibLevel)
                          signal = true; // this would go to market analyzer
                  }

               } 
         }

    }
}

So it seems like because I went

Code

if (BarsInProgress == 0)
   // anything inside here or executed from here will be ONLY coming in at a speed of the base chart.
  // if I have a 30 minute chart, it will only read it everything 30 minutes even though I can access the 
 // BIP == 1 values via Close[0][1]

The only thing I can think of is creating a boolean variable is like

Code

bool startTick = false;

and when it signals, startTick = true
Then in a separate block

Code

if (BarsInProgress == 1)
  // perform that stuff there

I just didn't know if there was a better way?
I am also going to try adding a break; to the if statement but not sure the best way to do this either

any help would be great

thanks
Spencer

September 11th, 2016, 04:56 AM

Code

private BoolSeries entryCondition = null;
private double fibLevel;
private bool signal = false;
private bool monitor = false;

protected override void Initialize()
{
   entryCondition = new BoolSeries(this);
   Add(PeriodType.Tick, 1);
}
// and then in OnBarUpdate I have to separate them
// let's just say for sake of argument the entryCondition and the fibLevel are  already "set" somewhere else

protected override void OnBarUpdate()
{
    if (CurrentBars[0] > 3)
    {
        if (BarsInProgress == 0) // for the base chart
        {
              if (entryCondition[0])
              {
                   // now I want to monitor price by tick by tick
                   // as soon as it hits the fib level 

                  monitor = true;
              }
         }
         else // in the tick series
         {
              if (monitor)
              {
                 if (High[0] > fibLevel)
                 {
                      signal = true; // this would go to market analyzer
                 }
              }
         }
    }
}

I think you want something like that. Remember to clear 'monitor' wherever else you are looking after signal and entryCondition.

Cheers

September 13th, 2016, 12:02 PM

So as an update here is what I discovered

my new friend is OnMarketData !

I knew I needed some type of an event similar to OnOrderUpdate and OnExecution, but since this is not a strategy I didn't know what other events I could use.

Now that I am aware of this event (I heard of it before just never used it) and what I can use it for, I will keep my eyes on the lookout for ALL of the events available in NinjaTrader 7 as well as 8.

The events built in really did save the day

Here is what I was looking for. My strategy is COBC = true because if I did COBC = false and used FirstTickOfBar to help calculate things, it does not give the same exact values bar by bar on a consistent basis, so I could not go down that route.

I didn't want to Add(PeriodType.Tick, 1) because it takes FOREVER to load when you put it on the chart.

Plus this is Forex and I am not sure if FXCM adds the ticks as easy as futures for CQG. I would always get an error and this is not good if you are writing something for a client.

Therefore I wanted COBC = true, but when a certain price is reached, I wanted it to start monitoring it in real time tick by tick.

Enter the OnMarketData. It works great!

Code

		bool signal = false;
		bool monitorFibLevel = false;
		int fibLevel;
		protected override void OnMarketData(MarketDataEventArgs e)
		{
			if (e.MarketDataType == MarketDataType.Last)
			{
				Print("OnMarketData.Last = " + e.Price);
				
				if (monitorFibLevel && e.Price <= fibLevel) 
				{
					Print("Price hit at : " + Time[0]);
					signal = true; // we have a signal
					monitorFibLevel = false;
				}
			}
		}

So since Ninja is event driven, and they seem to not have bugs in the events, I am definitely going to make myself aware of all of the available events.

This will probably only enhance my code making it "lighter" and easier to load as well as more accurate.

September 13th, 2016, 12:18 PM

spinnybobo

Enter the OnMarketData. It works great!

It is good for live work, just be aware that it's no use in backtesting (no data), or in replay (1s accuracy) in NT7.

September 13th, 2016, 02:59 PM

ratfink

It is good for live work, just be aware that it's no use in backtesting (no data), or in replay (1s accuracy) in NT7.

Hey

yes I am aware it is only for real time data. so since this is just an indicator and does need it to be tick by tick for Historical, that is fine. I am mainly talking about situations in which you want to jump into tick right away

if it was a strategy and the stop needed to be trailed and I wanted to backtest it, then yes I would need to add tick data to the chart and handle it
However, in that situation I would use IOrder states to trigger as opposed to a boolean like

Code

private IOrder entryOrder = null;
private IOrder stopOrder = null;
private int tickSeries = 1;

protected override void Initialize()
{
     Add(PeriodType.Tick, 1);
}
protected override void OnBarUpdate()
{
   if (BarsInProgress == tickSeries && Long && stopOrder != null)
   {
        // logic to trail stop
   }
}

private bool Long{ get { return(Position.MarketPosition == MarketPosition.Long); }}
private bool Short{ get { return(Position.MarketPosition == MarketPosition.Short); }}
private bool Flat{ get { return(Position.MarketPosition == MarketPosition.Flat); }}

then I would need the ticks to be added.

Access Tick Data within BarsInProgress minute loop

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Access Tick Data within BarsInProgress minute loop