How-to-refer-to-a-parameter-by-name

2024-04-28T17:50:37Z - 2024-04-28T17:50:37Z ago

I don't know enough to know whether this is implementable but can parameters be changed so that we can write something like this

CODE:
public MyStrategy() // This has to have the name of the class above
      {

         // In this instance I am not using this for anything
         AddParameter("Steepness_level", ParameterType.Int32, -15, -15, 40, 1);   // Parameter index 0
         AddParameter("High_per", ParameterType.Int32, 50, 25, 300, 25);   // Parameter index 1 
         //AddParameter("ATR_mult_2", ParameterType.Int32, 2, 2, 8, 1);
      }

CODE:
 public override void Initialize(BarHistory bars){
   highest_s = Highest.Series(bars.Close, Parameters[1].AsInt);
}

CODE:
 public override void Initialize(BarHistory bars){
   highest_s = Highest.Series(bars.Close, Parameters.High_per.AsInt);
}

Thank you for the consideration.

2 Replies

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Eugene8

2024-04-28T18:08:41Z - 2024-04-28T18:08:41Z ago

You're looking for this, no need for feature requests (removed):

ParameterList.FindName

It's documented here: https://www.wealth-lab.com/Support/ApiReference/ParameterList

CODE:
var highest_s = Highest.Series(bars.Close, Parameters.FindName("High_per").AsInt);

P.S. Use the CODE button instead of QUOTE when wrapping code snippets (fixed).

superticker8

2024-04-28T18:47:54Z - 2024-04-28T18:47:54Z ago

If you look at the Docs for the AddParameter method, it does return a Parameter object. But if you want that object to be visible throughout the strategy (which you probably do), then you need to declare that object in the MyStrategy {block} with any other strategy-wide declarations. In other words, standard C#/C++/Java scoping rules apply.

CODE:
public class MyStrategy : UserStrategyBase
{
   Parameter steepness_level, high_per;
   IndicatorBase highest_s;

   public MyStrategy()
   {
      steepness_level = AddParameter("Steepness_level", ParameterType.Int32, -15, -15, 40, 1); // Parameter index 0
      high_per = AddParameter("High_per", ParameterType.Int32, 50, 25, 300, 25); // Parameter index 1 
   }

   public override void Initialize(BarHistory bars)
   {
      highest_s = Highest.Series(bars.Close, high_per.AsInt);
   }

   public override void Execute(BarHistory bars, int idx) {  }
}

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