tick size

[dibDab]

I have a tickSize property

[Range(1, double.MaxValue),
NinjaScriptProperty]
[Display(ResourceType = typeof(Custom.Resource), Name = "tickSize", GroupName = "NinjaScriptParameters", Order = 0)]
public double tickSize
{ get; set; }

that I'd like to initialize with Bars.Instrument.MasterInstrument.TickSize and use in my code.

can this be done, if so can I do this in OnStateChange?

[eDanny]

Why are you setting up tick size like this? You cannot change it. Try declaring the variable:
double tickSize;
Then in State.Configure:
tickSize = TickSize;

[NinjaTrader_Emily]

Hello dibDab,

Thank you for your note.

What is your purpose for using the tickSize property? TickSize is already available per the instrument's settings in the database:

https://ninjatrader.com/support/helpGuides/nt8/masterinstrument_ticksize.htm

Are you able to provide an example of what you plan to use this for so I may better assist you?

I look forward to your clarification.

[dibDab]

I wanted to display tickSize in the UI as a property, initialised as Bars.Instrument.MasterInstrument.TickSize and allow it to be changed?

[NinjaTrader_Emily]

Hello dibDab,

Thank you for clarifying.

It is not supported to change Bars.Instrument.MasterInstrument.TickSize as a property in the script because this is a value saved in the instrument database. Tick sizes are set by the exchanges that instruments are traded on and not by NinjaTrader itself, so even manually changing the tick size in the database could lead to some unexpected results. If you are wanting to use a tick size value for calculations in your script, you could set a different variable that defaults to the value of Bars.Instrument.MasterInstrument.TickSize and could be manually changed. That could look something like the following snippet:

protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                SizeOfTick                    = Bars.Instrument.MasterInstrument.TickSize;
            }
        }
        #region Properties
        [NinjaScriptProperty]
        [Range(1E-05, double.MaxValue)]
        [Display(Name="SizeOfTick", Description="Tick Size.  Defaults based on instrument settings in database.", Order=1, GroupName="Parameters")]
        public double SizeOfTick
        { get; set; }
        #endregion​​

Please let us know if we may be of further assistance.