/*********************************Provided By: eSignal (Copyright c eSignal), a division of Interactive Data Corporation. 2009. 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: Moving Average CrossoverVersion: 1.0 03/24/2009Formula Parameters: Default: Length Fast SMA 20 Length Slow SMA 40Notes: 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 today?s market where you don?t 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. **********************************/var fpArray = new Array();var bInit = false;function preMain() { setPriceStudy(true); setStudyTitle("Moving Average Crossover"); setColorPriceBars(true); setDefaultPriceBarColor(Color.black); setPlotType(PLOTTYPE_LINE,0); setDefaultBarFgColor(Color.red, 0); setPlotType(PLOTTYPE_LINE,1); setDefaultBarFgColor(Color.blue, 1); var x=0; fpArray[x] = new FunctionParameter("Length", FunctionParameter.NUMBER); with(fpArray[x++]){ setName("Length Fast SMA"); setLowerLimit(1); setDefault(20); } var x=0; fpArray[x] = new FunctionParameter("Length2", FunctionParameter.NUMBER); with(fpArray[x++]){ setName("Length Slow SMA"); setLowerLimit(1); setDefault(40); }}var xSMAFast = null;var xSMASlow = null;function main(Length, Length2) {var nBarState = getBarState();var nSMAFast = 0;var nSMASlow = 0; if (nBarState == BARSTATE_ALLBARS) { if (Length == null) Length = 20; if (Length2 == null) Length2 = 40; } if (bInit == false) { xSMAFast = sma(Length); xSMASlow = sma(Length2); bInit = true; } nSMAFast = xSMAFast.getValue(-1); nSMASlow = xSMASlow.getValue(-1); if(nSMAFast == null || nSMASlow == null) return; if (getCurrentBarIndex() == 0) return; if(nSMAFast >= nSMASlow && !Strategy.isLong()) Strategy.doLong("Crossing Up", Strategy.MARKET, Strategy.THISBAR); if(nSMAFast < nSMASlow && !Strategy.isShort()) Strategy.doShort("Crossing Down", Strategy.MARKET, Strategy.THISBAR); if(Strategy.isLong()) setPriceBarColor(Color.lime); else if(Strategy.isShort()) setPriceBarColor(Color.red); return new Array(nSMAFast, nSMASlow);} |
