Optimiser Type

[Jenny]

It looks I have to code my own optimizer type.
Then I try to get random number between 0
~1, I use RAND(), some how NT give an error. What I should use to create a random number?
Thanks

[NinjaTrader_JoshP]

http://www.geekpedia.com/tutorial238_Generate-Random-Numbers-using-Csharp.html

[Jenny]

Josh,
I copy 2 lines to my code, NT can't compile, what I do wrong? Thanks!
Random randNum = new Random();
randNum.Next(1, 108); // No larger than 108, no smaller than 1

[NinjaTrader_JoshP]

What is the error you are getting?

In the variables section do this:

private Random randNum = new Random();

In the OnBarUpdate() method do this:

Print(Time[0] + " " + randNum.Next(1, 108));

or if you want it between 0 and 1

Print(Time[0] + " " + randNum.NextDouble());

[Jenny]

Josh,
Good morning.
I try to use it in the file for optimizer to change the index:
index=randNum.Next(parameter.Min,parameter.Max), I have delcared the ....

[Jenny]

this had been deleted.

[Jenny]

Please forget about my last post. Here is an updated file:
//
// Copyright (C) 2006, NinjaTrader LLC <www.ninjatrader.com>.
//
#region Using declarations
using System;
using System.ComponentModel;
using System.Drawing;
using NinjaTrader.Cbi;
using NinjaTrader.Data;
using NinjaTrader.Indicator;
using NinjaTrader.Strategy;
#endregion

// This namespace holds all strategies and is required. Do not change it.
namespace NinjaTrader.Strategy
{
/// <summary>
/// </summary>
[Gui.Design.DisplayName("Random")]
public class RandomOptimizationMethod : OptimizationMethod
{
/// <summary>
/// This methods iterates the parameters recursively. The actual back test is performed, as the last parameter is iterated.
/// </summary>
/// <param name="index"></param>
private void Iterate(int index)
{if (UserAbort)
return;
Parameter parameter = Strategy.Parameters[index];
if (parameter.ParameterType != typeof(int) && parameter.ParameterType != typeof(double))
{
if (index == Strategy.Parameters.Count - 1) // last parameter ?
RunIteration();
else // iterate next parameter
Iterate(index + 1);
return;
}

double value = randNum.Next(parameter.Min, parameter.Max); {
if (UserAbort)
return;

parameter.Value = value;
if (index == Strategy.Parameters.Count - 1) // last parameter ?
RunIteration();
else // iterate next parameter
Iterate(index + 1);
}
}

/// <summary>
/// Runs the optimizer on a given parameter set.
/// This is a brute-force optimizer. It runs back tests on every potential parameter combination.
/// </summary>
public override void Optimize()
{if (UserAbort)
return;
Iterate(0);
}
}
}

[NinjaTrader_Dierk]

Unfortunately this is beyond of what we can support. You might consider contacting a certified NinjaScript consultant here: http://www.ninjatrader.com/webnew/pa...injaScript.htm