More Questions from a Ninja Beginner

[tradenj]

Hello:

1. I don't seem to be able to execute an edited version of a script. If I edit/ save a script and then run it, the prior, unedited version is run instead.

2. I'm trying to add an indicator to a script -- SMA plotted in the price pane in this example and am pasting a piece of code with the following compilation error:
"An object reference is required for the non-static field, method, or property
'NinjaTrader.Strategy.Strategy.SMA (NinjaTrader.Data.IDataSeries, int)' ".

Thank you !

#region Using declarations
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Data;
using NinjaTrader.Indicator;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Strategy;
#endregion

// This namespace holds all strategies and is required. Do not change it.
namespace NinjaTrader.Strategy
{
/// <summary>
/// Enter the description of your strategy here
/// </summary>
[Description("Enter the description of your strategy here")]
public class Hello : Strategy
{
#region Variables
// Wizard generated variables
private int myInput0 = 1; // Default setting for MyInput0
// User defined variables (add any user defined variables below)
#endregion

/// <summary>
/// This method is used to configure the strategy and is called once before any strategy method is called.
/// </summary>
/** ************************************************** ************************* */
protected override void Initialize()
{
CalculateOnBarClose = true;
}
/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
public double value = SMA(High, 20)[0];
protected override void OnBarUpdate( )
{
Print("The current SMA value is " + value.ToString());

}
#region Properties
[Description("")]
[GridCategory("Parameters")]
public int MyInput0
{
get { return myInput0; }
set { myInput0 = Math.Max(1, value); }
}
#endregion
}
}

[NinjaTrader_JC]

Hello tradenj,

1. After you have changed/edited your Strategy you will want to make sure you Compile the Strategy inside of NinjaTrader to make sure that NinjaTrader will use the changed version.

2. When you are accessing Price data make sure it is inside of a method that is going to be called from the incoming data like placing it inside of OnBarUpdate(). Example:

#region Variables
// Wizard generated variables
private int myInput0 = 1; // Default setting for MyInput0
public double value;
// User defined variables (add any user defined variables below)
#endregion

protected override void OnBarUpdate( )
{
	value = SMA(High, 20)[0];
Print("The current SMA value is " + value.ToString());

}

You may want to view the following thread that has some good information and links for beginners with Strategies.

http://www.ninjatrader.com/support/forum/showpost.php?p=314049&postcount=2

[tradenj]

...of course!

...of course! Many thanks for your guidance. Sometimes when attempting to absorb a new system things can seem more overwhelming than they really are.