Multiplication Operator Error Message

Author: jtgraham

Creation Date: 2/21/2009 4:44 PM

Wealth Lab » WealthScript (.NET) » Multiplication Operator Error Message

jtgraham

2/21/2009 4:44 PM

For line 44 in the following code I received the error message: Operator * cannot be applied to operands of type 'double' and 'WealthLab.Strategy Parameter' Can you help me correct this error in applying a multiplication factor to high[bar]? (It worked when I used a number such as 1.02 instead of a parameter.)

Other than the parameter error, does the exit code look ok? My objective is to exit the position if a limit price is reached, or a time-based exit is triggered, or if a trailing stop is triggered, whichever occurs first.

How can I have the Exit Name "Time Based" print in the Strategy Window when the time-based exit occurs?

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Other than the parameter error, does the exit code look ok?  My objective is to exit the position if a limit price is reached, or a time-based exit is triggered, or if a trailing stop is triggered, whichever occurs first.

How can I have the Exit Name "Time Based"  print in the Strategy Window when the time-based exit occurs?

[CODE]using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using WealthLab;
using WealthLab.Indicators;

namespace WealthLab.Strategies
{
	public class MyStrategy : WealthScript
	{
		StrategyParameter atrparam;
		StrategyParameter down;
		StrategyParameter hold;
		StrategyParameter limit;
		
		public MyStrategy()
		{
			down = CreateParameter("Down Days", 8, 2, 15, 1);
			atrparam = CreateParameter("ATR Factor", 12, 1, 20, 1);
			hold = CreateParameter("Hold Days",54, 2, 90, 2);
			limit = CreateParameter("Limit Factor", 1.02, 1.01, 1.20, 0.01); 
						
		}
				
		protected override void Execute()
		{
			PlotStops();
			int period = 20;
			
			int downDays = down.ValueInt;
			int atrFactor = atrparam.ValueInt;
			int holdDays = hold.ValueInt;
			
			RSI rsi = RSI.Series(Close, 14);
			DataSeries atr = ATR.Series(Bars, period );
			DataSeries high = Highest.Series(High, 20 );
			
			for(int bar = 20; bar < Bars.Count; bar++)
			{
				if (IsLastPositionActive)
				{
					Position p = LastActivePosition;
					if(SellAtLimit(bar+1, LastPosition, high[bar]*limit, "Limit Sell" )
					|| (bar + 1 - p.EntryBar >= holdDays))					
					SellAtMarket (bar + 1, LastPosition);
					
					// Trailing Chandelier exit (Chuck LeBeau) at 40-bar highest high minus 3 ATR units
					SellAtTrailingStop(bar+1, p, Highest.Series(High, period)[bar]-atrFactor*atr[bar], "Trailing Stop");
					
				}
				else
				{[/CODE]

Cone

2/21/2009 5:17 PM

Use a Strategy Parameter's Value (floating point) or ValueInt (integer) property, i.e., limit.Value

Follow the design pattern any installed script that uses Strategy Parameters, like the Glitch Index, Dip Buyer, etc.