Adding References (From Visual Studio)

[PaulMohn]

Oh ok I've reuploaded the images now (I had the 5 images per post limit issues before)

I forgot to reference them
Using 3rd Party Indicators

I checked from the script in Ninjascript editor > right click > references
but the new .dlls don't show up.
The only .dll showing from the Custom folder is Ninjatrader.Vendor.dll
Any reason why? Thanks!

I saw the same .dll showing at this timestamp
10 Benefits of Using Visual Studio with NinjaTrader - Ninja Mastery

[NinjaTrader_Jesse]

Hello PaulMohn,

but the new .dlls don't show up.
The only .dll showing from the Custom folder is Ninjatrader.Vendor.dll

Are you clicking Add to browse to the bin/custom folder? The dlls don't add themselves to the list, you have to add each dll manually.

[PaulMohn]

Thanks Jesse I didn't look for the add.
I got it on now!

[PaulMohn]

Ok so it does load but I got these error

NinjaScript File Error Code Line Column
Testa.cs 'NinjaTrader.NinjaScript.Series<double>' does not contain a definition for 'Median' and the best extension method overload 'MathNet.Numerics.Statistics.Statistics.Median(Sys tem.Collections.Generic.IEnumerable<double>)' has some invalid arguments CS1928 939 21

NinjaScript File Error Code Line Column
Testa.cs Instance argument: cannot convert from 'NinjaTrader.NinjaScript.Series<double>' to 'System.Collections.Generic.IEnumerable<double>' CS1929 939 21

The package ref for the median

https://numerics.mathdotnet.com/api/MathNet.Numerics.Statistics/Statistics.htm#Median

states

double Median(this IEnumerable<double> data)

Estimates the sample median from the provided samples (R8).
Parameters

IEnumerable<double> data


The data sample sequence.

I use a list for the data

        private Series<double> Rng0Rng1;

        Rng0Rng1[Rng0Index] = Rng0[Rng0Index] - Rng1[Rng1Index];

        double median = Rng0Rng1.Median();

        double var02b = Instrument.MasterInstrument.RoundToTickSize(median / TickSize); 

Is there a way to use the list as/with IEnumerable<double> ?

Or what other solution would you suggest? Thanks!

[NinjaTrader_Jesse]

Hello PaulMohn,

I won't be able to tell you what you need for the library to work or be able to help with that libraries use, adding the reference assumes you have something working with that library externally or know exactly what you need already. You may need other libraries referenced based on the error.

If you are using nuget that generally entails that you make your own external project to collect needed resources or even form a test C# application to ensure you have something working beforehand. Once you have all the requirements you could copy the requirements like the dlls to NinjaTrader folders and then try and reference it.

[PaulMohn]

Ok thanks Jesse.

I found a way from this helping post
Why can't I assign List<int> to IEnumerable<object> in .NET 4.0

I had to formulate it this way

namespace NinjaTrader.NinjaScript.Indicators
{
  public class Testa: Indicator
  {
    private List<double> listOfSeriesValues;

    IEnumerable<double> median;


    protected override void OnStateChange()
    {
      if (State == State.SetDefaults)
      {
        //properties etc. here
      }
      else if (State == State.Configure)
      {
      }
      else if (State == State.DataLoaded)
      {        
        listOfSeriesValues = new List<double>();

        median = new List<double>();
      }



    protected override void OnBarUpdate()
    {
      Rng0Rng1[Rng0Index] = Rng0[Rng0Index] - Rng1[Rng1Index];

      listOfSeriesValues.Add(Rng0Rng1[0]);


      double meds = listOfSeriesValues.Median();

      double var02b = Instrument.MasterInstrument.RoundToTickSize(meds / TickSize); 

It is returning a value for the variable meds (please see attached images), though I'm not sure if that's right as there seems to be no connection between the

IEnumerable<double> median; / median = new List<double>(); 

and the

double meds = listOfSeriesValues.Median(); 

And when I comment out the

IEnumerable<double> median; / median = new List<double>(); 

it's not returning the value.

Any advice on what the connection is? Thanks!

[NinjaTrader_Jesse]

Hello PaulMohn,

I won't be able to tell what is happening with that library.

The line you mentioned seems that it is creating a new list, that is really all i can tell from that code.