Counting number of times RSI is under 40

Author: xjlit

Creation Date: 6/30/2013 1:33 PM

Wealth Lab » WealthScript (.NET) » Counting number of times RSI is under 40

xjlit

6/30/2013 1:33 PM

Hello,

I am new to Wealth Lab. I am more of a Perl scripter, not so much a programmer.

I am attempting to count the number of times that the 2 day rsi is under 40 (or some given number). Below is what I have come up with using examples from the Programming Guide and the Wiki. I don't seem to be getting a count. Could someone point me in the right direction so that I an understand what I need to do here?

Thanks,
John

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Eugene

6/30/2013 2:50 PM

Welcome to the forums John. I think you're looking for something like this:

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xjlit

6/30/2013 6:59 PM

Wow, thanks Eugene. I wasn't even close. That's very nice.

I have been looking through your code to try and get an understanding of how the C# programming code works. I have some questions below. If you have time could you comment?

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Wow, thanks Eugene.  I wasn't even close.  That's very nice.

I have been looking through your code to try and get an understanding of how the C# programming code works.  I have some questions below.  If you have time could you comment?

[code]

namespace WealthLab.Strategies
{
   public class MyStrategy : WealthScript
   {

//These are variables?
      private StrategyParameter paramRsiPer;
      private StrategyParameter paramRsiThresh;
      
      public MyStrategy()
      {

//Assigning values to variables?
//I understand the  2 and 40, but not the 2, 30 1 and 10,90,10.  To what do these refer?
         paramRsiPer = CreateParameter("RSI Period", 2, 2, 30, 1);
         paramRsiThresh = CreateParameter("Threshold", 40, 10, 90, 10);
      }   
      
      protected override void Execute()
      {

//Get the value of the variable
         int rsiPer = paramRsiPer.ValueInt;
//I've seen double in the docs but not  sure how/when to use it
         double threshold = paramRsiThresh.Value;

//Is thee a list of the DataSeries parameters somewhere?
         DataSeries rsi = RSI.Series( Close, rsiPer );
         DataSeries ltc = new DataSeries( Bars, string.Format( "RSI less than {0}", threshold ) );

//I understand the formula except for the * 3
         int c = 0;
         for(int bar = rsiPer * 3; bar < Bars.Count; bar++)
         {
            if( rsi[bar] < threshold )
               c++;
            else
               c = 0;
            
            ltc[bar] = c;
         }
         
         ChartPane ltcPane = CreatePane(40, true, false);
         PlotSeries(ltcPane, ltc, Color.Blue, WealthLab.LineStyle.Histogram, 1);

[/code]

Cone

6/30/2013 8:20 PM

QUOTE:
//I understand the 2 and 40, but not the 2, 30 1 and 10,90,10. To what do these refer?

They are the default parameter values.

QUOTE:
//I've seen double in the docs but not sure how/when to use it

It declares a double-precision floating point variable. Standard C#.

QUOTE:
//Is thee a list of the DataSeries parameters somewhere?

Take advantage of the intellisense when typing WealthScript functions and indicators, however, each indicator's documentation is linked from the Technical Indicators dialog (Ctrl + F11). Intellisense is automatic, but if it stops showing (loss of focus, for example) you can get it back by striking Ctrl+Space.