How to get the Added series's TickSize

[PaulMohn]

I have an Added Data Series "CLSeries" to a main GC Chart.

From the Instrument.GetInstrument() doc I'm trying to display its range with the correct TickSize for CL on the chart with the Instrument.GetInstrument("CL"); and Draw.TextFixed() methods in below snippet

namespace NinjaTrader.NinjaScript.Indicators
{
  public class jimsExpiryMethod : Indicator
  {
    private Series<double> CLSeries;

    protected override void OnStateChange()
    {
      if (State == State.SetDefaults)
      {
      }
      else if (State == State.Configure)
      {
        AddDataSeries(GetCurrentFuture("CL"), BarsPeriodType.Day, 1);
      }
      else if (State == State.DataLoaded)
      {
        CLSeries = new Series<double>(this, MaximumBarsLookBack.Infinite);
      }


    protected override void OnBarUpdate()
    {
      NinjaTrader.Gui.Tools.SimpleFont myFont = new NinjaTrader.Gui.Tools.SimpleFont("Courier New", 12) { Size = 12, Bold = true };

      CLSeries[0] = Highs[1][0]-Lows[1][0];

      Print("CLSeries " + CLSeries[0]);

      Instrument Crude = Instrument.GetInstrument("CL");

      Draw.TextFixed(
            this,
            "CLSeries",
            "CL DR: "+Crude.MasterInstrument.RoundToTickSize(CLSeries[0] / TickSize),
            TextPosition.TopRight,
            Brushes.White,
            myFont,
            Brushes.Transparent,
            Brushes.Transparent,
            0); 

The problem is it's returning the TickSize of GC (54.5 (as 0.1 for GC basis point) instead of 544 expected for CL 0.01 Basis point).

How to get it to return the right TickSize (544 instead of 54.4) for CL on the GC chart? Thanks!

[NinjaTrader_ChrisL]

Hi Paul, thanks for posting. The GetInstrument needs an exact Instrument name:

Instrument Crude = Instrument.GetInstrument("CL 05-22");

The tick size for the CS is 0.01.

Kind regards,
-ChrisL

[PaulMohn]

Hi again Chris and thanks for the modification.

I tested with Jim's Expiry method

Expiry method and here from Jim

            Instrument Crude = Instrument.GetInstrument(GetCurrentFuture("CL")); 

Jim's Expiry method

    private string GetCurrentFuture(string name)
    {
    foreach (Instrument inst in Instrument.All)
    {
      if (inst.MasterInstrument.Name == name && inst.MasterInstrument.InstrumentType == InstrumentType.Future)
      {
      string instFullName = String.Format("{0} {1}-{2}",
          name,
          inst.MasterInstrument.GetNextExpiry(Core.Globals.Now).Month.ToString("D2"),
          inst.MasterInstrument.GetNextExpiry(Core.Globals.Now).ToString("yy"));
      return instFullName;
      }
    }
    return name;
    } 

but it doesn't correct the tick size of 54.4 for 5.44 points Daily range which should be 544 for CL 0.01 tick Size (please see the attached image).

Is there something else missing? Thanks!

The complete script

https://pastebin.com/ysMkC99Y

[NinjaTrader_ChrisL]

Hi Paul, You are using just "TickSize" in your equation, which is referencing the primary series TickSize. To get the CL tick size use Crude.MasterInstrument.TickSize. You can also debug the values you are getting by printing them to bridge the gap between expected results and actual results. Using Prints is an invaluable tool in the script development process. When you get stuck or find a bug, please use Print on all of the properties being used first:

Print(Crude.MasterInstrument.TickSize);
Print(TickSize);

[PaulMohn]

Many thanks Chris. Sorry for that TickSize lack, but I assumed it was already specified/picked up by Jim's Expiry method and i wouldn't possible have been able to infer it was required also for the TickSize.

But yes I could have tested printing the TickSize value alone to check. I'll be more rigorous going forward and test printing all "variables" (also the ones I assume are "constant/correct by default").

Now it's working with

  Draw.TextFixed(
    this,
    "CLSeries",
    "CL DR: "+Crude.MasterInstrument.RoundToTickSize(CLSer ies[0] / Crude.MasterInstrument.TickSize),
    TextPosition.TopRight,
    Brushes.White,
    myFont,
    Brushes.Transparent,
    Brushes.Transparent,
    0); 

with complete script

https://pastebin.com/baFBae14

Have a good Weekend!