EMA & MA Crossover

str_ma_ema_crsv.efs                                                                                       EFSLibrary - Discussion Board

File Name: str_ma_ema_crsv.efs

Description:
EMA & MA Crossover

 

Formula Parameters:
Length MA: 10
Length EMA: 10

 

Notes:
The Moving Average Crossover trading strategy is possibly the most popular
trading strategy in the world of trading. First of them were written in the
middle of XX century, when commodities trading strategies became popular.
This strategy is a good example of so-called traditional strategies.
Traditional strategies are always long or short. That means they are never
out of the market. The concept of having a strategy that is always long or
short may be scary, particularly in todayRs market where you donRt know what
is going to happen as far as risk on any one market. But a lot of traders
believe that the concept is still valid, especially for those of traders who
do their own research or their own discretionary trading.
This version uses crossover of moving average and its exponential moving average.

 

Download File:
str_ma_ema_crsv.efs




EFS Code:

/*********************************Provided By: eSignal (Copyright c eSignal),
a division of Interactive Data Corporation. 2008. All rights reserved.
This sample eSignal Formula Script (EFS) is for educational purposes only 
and may be modified and saved under a new file name.
eSignal is not responsible for the functionality once modified. 
eSignal reserves the right to modify and overwrite this EFS file with each new release.
Description: EMA & MA CrossoverVersion: 1.0 10/14/2008
Notes: The Moving Average Crossover trading strategy is possibly the most popular trading strategy 
in the world of trading. First of them were written in the middle of XX century, when commodities trading strategies became popular.
This strategy is a good example of so-called traditional strategies.
Traditional strategies are always long or short. 
That means they are never out of the market. 
The concept of having a strategy that is always long or short may be scary,
particularly in todayRs market where you donRt know what is going to happen as far as risk on any one market. 
But a lot of traders believe that the concept is still valid, especially for those of traders who do their own research
or their own discretionary trading. This version uses crossover of moving average and its exponential moving average. 
Formula Parameters: Default: Length MA 10 Length EMA 10**********************************/

var fpArray = new Array();
var bInit = false;

function preMain() {
  setPriceStudy(true);
  setStudyTitle("MA Strategy");
  setCursorLabelName("MA", 0);
  setDefaultBarFgColor(Color.red, 0);
  setCursorLabelName("EMA (MA)", 1);
  setDefaultBarFgColor(Color.blue, 1);
  setColorPriceBars(true);
  setDefaultPriceBarColor(Color.grey);
  var x = 0;
  fpArray[x] = new FunctionParameter("LengthMA", FunctionParameter.NUMBER);
  with (fpArray[x++]) {
    setName("Length MA");
    setLowerLimit(1);
    setDefault(10);
  }
  fpArray[x] = new FunctionParameter("LengthEMA", FunctionParameter.NUMBER);
  with (fpArray[x++]) {
    setName("Length EMA");
    setLowerLimit(1);
    setDefault(10);
  }
}
var xEMA = null;
var xMA = null;

function main(LengthMA, LengthEMA) {
  var nState = getBarState();
  if (nState == BARSTATE_ALLBARS) {
    if (LengthMA == null) LengthMA = 10;
    if (LengthEMA == null) LengthEMA = 10;
  }
  if (bInit == false) {
    xMA = sma(LengthMA);
    xEMA = ema(LengthEMA, xMA);
    bInit = true;
  }
  if (getCurrentBarCount() < Math.max(LengthMA, LengthEMA)) return;
  if (getCurrentBarIndex() == 0) return;
  if (xMA.getValue(-1) > xEMA.getValue(-1) && !Strategy.isLong()) {
    Strategy.doLong("Long", Strategy.MARKET, Strategy.THISBAR);
  }
  if (xMA.getValue(-1) < xEMA.getValue(-1) && !Strategy.isShort())
    Strategy.doShort("Short", Strategy.MARKET, Strategy.THISBAR);
  if (Strategy.isLong()) setPriceBarColor(Color.lime);
  if (Strategy.isShort()) setPriceBarColor(Color.red);
  return new Array(xMA.getValue(0), xEMA.getValue(0));
}