Use MZpack core to code indicators based on order flow/order book and market microstructure logic. Programming interfaces described in User Guide.

Typical indicator instantiate method looks like

public static mzBigtrade CreateInstance(NinjaTrader.Indicator.IndicatorCollection Indicators, IDataSeries input)

First of all add reference to MZpack dll file in your NinjaScript environment. Click right mouse button in NinjaScript editor and click References… Then click Add… button and select MZpack.NT7.dll file. Click Ok.

Then add MZpack.NT7 namespace in using section

using MZpack.NT7;

Declare MZpack indicator property inside custom indicator class and data series

 public class MZpackBigDelta : Indicator
 {
    [Browsable(false)] [XmlIgnore()] public DataSeries SellDelta { get {     return Values[0]; }}
    [Browsable(false)] [XmlIgnore()] public DataSeries BuyDelta { get {    return Values[1]; }}
    //
    private mzBigtrade indicator;
    ...
 }

Set CaclulateOnBarClose = false to process tick-by-tick data

 protected override void Initialize()
 {
    CalculateOnBarClose = false;
    ...
 }

OnStartUp() method called on each indicator start. Create MZpack indicator instance inside and set desired parameters.

 protected override void OnStartUp()
 {
    // Create MZpack indicator instance
    indicator = mzBigtrade.CreateInstance(Indicators, Inputs[0]);
    // Set parameters
    indicator.BigtradeFilter = TradeFilter; 
    indicator.Aggregate = false;
    indicator.UseBigTradeAlert = false;
 }

Place indicator logic in OnBarUpdate() method. Check if data is not Historical because MZpack works only with realtime data.

protected override void OnBarUpdate()
{
   if (Historical)
     return;
 
   // Get last detected big trade
   // AggregatedTrade - base class for not viewed trade data
   AggregatedTrade bigTrade = (indicator.Draws.Count > 0) ?   indicator.Draws[indicator.Draws.Count - 1] : null;
 
   if (bigTrade != null && bigTrade.Id > lastTradeId) // avoid double processing by checking trade Id
   {
      if (bigTrade.Side() == TradeSide.Bid)
         sellBarDelta += bigTrade.Volume;
      ...
   }
}

Custom indicators samples

See available indicators sapmles to learn how to use MZpack core indicators in your project. To add this samples to NinjaTrader import MZpackInterfaceSamples.zip indicator from MZpack installation folder. MZpack 2.3.0 paid version or higer required to compile samples.