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 todayÒs market where you donÒt 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:
PHP 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 Crossover

Version:            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 todayÒs market where you donÒt 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.red0);
    
setCursorLabelName("EMA (MA)"1);
    
setDefaultBarFgColor(Color.blue1);
    
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(LengthMALengthEMA) {
var 
nState getBarState();

    if (
nState == BARSTATE_ALLBARS) {
        if(
LengthMA == nullLengthMA 10;
        if(
LengthEMA == nullLengthEMA 10;
    }

    if (
bInit == false) {
        
xMA sma(LengthMA);
        
xEMA ema(LengthEMAxMA);
        
bInit true;
    }

    if (
getCurrentBarCount() < Math.max(LengthMALengthEMA)) return;

    if (
getCurrentBarIndex() == 0) return;

    if(
xMA.getValue(-1) > xEMA.getValue(-1) && !Strategy.isLong()) {
        
Strategy.doLong("Long"Strategy.MARKETStrategy.THISBAR);
    }        
                
    if(
xMA.getValue(-1) < xEMA.getValue(-1) && !Strategy.isShort())
        
Strategy.doShort("Short"Strategy.MARKETStrategy.THISBAR);
    
    if(
Strategy.isLong())
        
setPriceBarColor(Color.lime);
    if(
Strategy.isShort())
        
setPriceBarColor(Color.red);

    return new Array(
xMA.getValue(0), xEMA.getValue(0));