The following code is for a backtester. I created the application on tickmarkt. It checks when an exponential moving average with 5 day lags crosses over the 10 day moving average and will open a trade. You might need a large time period for this to work or you can lower the lag and it will fire off sooner. I have some technical analysis indicators built into the system that I will soon open source as well.

here is some example backtester code:

var hasTrade = false;

function Init() { }

function Tick() { //5-day exponential moving average var ma5=analysis.Technical.ema('AAPL', 1 , 1 , 5 );

//10-day exponential moving average var ma10=analysis.Technical.ema('AAPL', 1 , 1 , 10 );

//invalid time data because of weekend if (ma5.length == 0 || ma10.length == 0) return;

if (ma5[0].value > ma10[0].value) { //open a trade if we dont have one if (hasTrade == false) {

      api.Broker.OpenTrade('AAPL', 
                           100,
               'open trade on cross'); 
     
     hasTrade = true;
   }

} else if (ma5[0].value < ma10[0].value) { //close a trade since we have one if (hasTrade == true) { api.Broker.OpenTrade('AAPL', -1100, 'close trade on cross');

      hasTrade = false;
   }

}

}

function Destroy() { }