2012 June: Trading High Yield Bonds Using ETFs by Brooke Gardner.

[eSignal]

File Name: PriceMA.efs

Description:
Trading High Yield Bonds Using ETFs by Brooke Gardner.

Formula Parameters:

PriceMA.efs
Price Source: Close
MA Period: 8
MA Type: Simple

Notes:
The related article is copyrighted material. If you are not a subscriber
of Stocks & Commodities, please visit www.traders.com .

Download File:
PriceMA.efs

PriceMA.efs


EFS Code:

/*********************************  
Provided By:
      Interactive Data Corporation (Copyright © 2012)
      All rights reserved. This sample eSignal Formula Script (EFS)
      is for educational purposes only. Interactive Data Corporation
      reserves the right to modify and overwrite this EFS file with
      each new release.  
       
Description:
      Trading High Yield Bonds Using ETFs by Brooke Gardner.

Version:            1.0  5/04/2012    

Formula Parameters:                     Default:
      Price Source                             Close
      MA Period                                 8
      MA Type                                   Simple         
  
Notes:
      The related article is copyrighted material. If you are not
      a subscriber of Stocks & Commodities, please visit [url]www.traders.com.[/url]

**********************************/    

var fpArray = new Array();    

function preMain()  
{
      setPriceStudy(true);
      setCursorLabelName("MA", 0);
      var x=0;    
      fpArray[x] = new FunctionParameter("priceSource", FunctionParameter.STRING);
      with(fpArray[x++])
      {
              setName("Price Source");
              addOption("Open");
              addOption("Close");
              addOption("Low");
              addOption("High");
              addOption("HL/2");
              addOption("HLC/3");
              addOption("OHLC/4");
              setDefault("Close");
      }   
      fpArray[x] = new FunctionParameter("maPeriod", FunctionParameter.NUMBER);
      with(fpArray[x++])
      {
              setName("MA Period");
              setLowerLimit(1);
              setDefault(8);
      }      
      fpArray[x] = new FunctionParameter("maType", FunctionParameter.STRING);
      with(fpArray[x++])
      {
              setName("MA Type");
              addOption("Simple");
              addOption("Exponential");
              addOption("Weighted");
              addOption("Volume Weighted");
              setDefault("Simple");
      }     
}    

var bInit = false;  
var bVersion = null;     
var xSource = null;  
var xMA = null;    
var i = 0;    

function main(priceSource, maPeriod, maType)  
{
      if (bVersion == null) bVersion = verify();
      if (bVersion == false) return;
      // Back Testing formulas are not for real time analysis.
      // Therefore, prevent processing and exit at bar 0.
      if (getCurrentBarIndex() == 0) return;
      if (!bInit)
      {
              switch (priceSource)
              {
                     case 'Open':
                         xSource = open();
                         break;
                     case 'Close':
                         xSource = close();
                         break;
                     case 'High':
                         xSource = high();
                         break;
                     case 'Low':
                         xSource = low();
                         break;
                     case 'HL/2':
                         xSource = hl2();
                         break;
                     case 'HLC/3':
                         xSource = hlc3();
                         break;
                     case 'OHLC/4': 
                         xSource = ohlc4();
                         break;
                     default : xSource = close();
              }
              switch (maType)
              {
                     case "Simple" :
                         xMA = sma(maPeriod, xSource);
                         break;
                     case "Exponential" :
                         xMA = ema(maPeriod, xSource);
                         break;
                     case "Weighted" :
                         xMA = wma(maPeriod, xSource);
                         break;
                     case "Volume Weighted" :
                         xMA = vwma(maPeriod, xSource);
                         break;
                     default : xMA = sma(maPeriod, xSource);
              }
              bInit = true;
      }
      var nPrice = xSource.getValue(0);
      var vMA = xMA.getValue(0);

      // Exit Strategy
      if (Strategy.isInTrade())
      {
           if (Strategy.isLong() && nPrice < vMA)
          {
              Strategy.doSell("Long Exit Signal", Strategy.CLOSE, Strategy.THISBAR);
          }
           else if (Strategy.isShort() && nPrice > vMA)
          {
              Strategy.doCover("Short Exit Signal", Strategy.CLOSE, Strategy.THISBAR);
          }
      }

      // Entry Strategy
      if (!Strategy.isInTrade())
      {
           if (nPrice > vMA)
          {
              Strategy.doLong("Long signal", Strategy.CLOSE, Strategy.THISBAR);
              drawShape(Shape.UPARROW, AboveBar1, Color.lime, i++);
          }
          else if (nPrice < vMA)
          {
              Strategy.doShort("Short signal", Strategy.CLOSE, Strategy.THISBAR);
              drawShape(Shape.DOWNARROW, BelowBar1, Color.red, i++);
          }
      }

      return xMA.getValue(0);  
}    

// verify version  
function verify() {
      var b = false;
      if (getBuildNumber() < 779) {
          drawTextAbsolute(5, 35, "This study requires version 8.0 or later.",
               Color.white, Color.blue, Text.RELATIVETOBOTTOM|Text.RELATIVETOLEFT|Text.BOLD|Text.LEFT,
               null, 13, "error");
          drawTextAbsolute(5, 20, "Click HERE to upgrade.@URL=http://www.esignal.com/download/default.asp",
               Color.white, Color.blue, Text.RELATIVETOBOTTOM|Text.RELATIVETOLEFT|Text.BOLD|Text.LEFT,
               null, 13, "upgrade");
          return b;
      } else {
          b = true;
      }
      return b;  
}