/*********************************Provided By: eSignal (Copyright c eSignal), a division of Interactive Data Corporation. 2012. 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 responsiblefor the functionality once modified. eSignal reserves the right to modify and overwrite this EFS file with each new release.Description: Using VIX To Forecast The S&P 500 by Trent GardnerVersion: 1.00 12/10/2012Formula Parameters: Default:Long Position Color limeShort Position Color redSMA Period 50Days Limit 11Notes:The related article is copyrighted material. If you are not a subscriberof Stocks & Commodities, please visit www.traders.com.**********************************/var fpArray = new Array();function preMain(){ setStudyTitle("VIX_TimingSystem"); setIntervalsBackfill(true); setPriceStudy(true); var x=0; fpArray[x] = new FunctionParameter("gBuyColor", FunctionParameter.COLOR); with(fpArray[x++]) { setName("Long Position Color"); setDefault(Color.lime); } fpArray[x] = new FunctionParameter("gSellColor", FunctionParameter.COLOR); with(fpArray[x++]) { setName("Short Position Color"); setDefault(Color.red); } fpArray[x] = new FunctionParameter("gSMAPeriod", FunctionParameter.NUMBER); with(fpArray[x++]) { setName("SMA Period"); setLowerLimit(1); setDefault(50); } fpArray[x] = new FunctionParameter("gDaysLimit", FunctionParameter.NUMBER); with(fpArray[x++]) { setName("Days Limit"); setLowerLimit(1); setDefault(11); } }var bInit = false;var bVersion = null;var xLow = null;var xSMA = null;var xSMA50 = null;function main(gBuyColor,gSellColor,gSMAPeriod,gDaysLimit){ if (bVersion == null) bVersion = verify(); if (bVersion == false) return; if(!bInit) { xLow = low(sym("$VIX")); xSMA = sma(gSMAPeriod,xLow); xSMA50 = sma(gSMAPeriod); bInit = true; } var vLow = xLow.getValue(-gDaysLimit); var vSMA = xSMA.getValue(-gDaysLimit); var vSMA50 = xSMA50.getValue(-gDaysLimit); if ((vLow == null) || (vSMA == null) || (vSMA50 == null)) return; var cntUp = 0; var cntDown = 0; for (i=-gDaysLimit; i<0; i++) { if (xLow.getValue(i)>xSMA.getValue(i)) cntUp++; if (xLow.getValue(i)=gDaysLimit) { Strategy.doLong("Enter Long", Strategy.MARKET, Strategy.THISBAR); drawTextRelative(0, BelowBar1, "Long", Color.black, gBuyColor, Text.PRESET, null, null); } } else { if (cntUp>=gDaysLimit) { Strategy.doShort("Enter Short", Strategy.MARKET, Strategy.THISBAR); drawTextRelative(0, AboveBar1, "Short", Color.black, gSellColor, Text.PRESET, null, null); } } } return xSMA50.getValue(0); }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;} |
