| | File Name: PremiereStochastic.efs
Description:
The following studies are based on the August 2008 article, Premier Stochastic Oscillator, by Lee Leibfarth.
Formula Parameters:
PremiereStochastic.efs
Stoch Length: 8
Period: 25
Line1: .9
Line2: .2
PSO_Strategy.efs
Stoch Length: 8
Period: 25
Line1: .9
Line2: .2
Profit Target %: 3
Stop Loss %: 1.5
Notes:
The related article is copyrighted material. If you are not a subscriber of Stocks & Commodities, please visit www.traders.com.
Download File:
PremiereStochastic.efs
PSO_Strategy.efs
EFS Code:
/*********************************Provided By: eSignal (Copyright ) 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: Premier Stochastic Oscillator by Lee LeibfarthVersion: 1.0 6/11/2008Notes:* August 2008 Issue of Stocks and Commodities Magazine* Study requires version 10.1 or later.**********************************/function preMain(){ setStudyTitle("Premiere Stochastic Oscillator"); setCursorLabelName("PSO",0); setShowCursorLabel(false,1); setShowTitleParameters(false); setPlotType(PLOTTYPE_LINE,0); setPlotType(PLOTTYPE_HISTOGRAM,1); setDefaultBarFgColor(Color.black,0); setDefaultBarFgColor(Color.blue,1); setStudyMax(1.1); setStudyMin(-1.1); var fp1 = new FunctionParameter("StochLength", FunctionParameter.NUMBER); fp1.setName("Stoch Length"); fp1.setLowerLimit(1); fp1.setDefault(8); var fp2 = new FunctionParameter("Period", FunctionParameter.NUMBER); fp2.setName("Period"); fp2.setLowerLimit(1); fp2.setDefault(25); var fp3 = new FunctionParameter("Line1", FunctionParameter.NUMBER); fp3.setName("Line1"); fp3.setLowerLimit(0); fp3.setDefault(.9); var fp4 = new FunctionParameter("Line2", FunctionParameter.NUMBER); fp4.setName("Line2"); fp4.setLowerLimit(0); fp4.setDefault(.2); }var bVersion = null;var bInit = false;var xPremiere = null;function main(StochLength,Period,Line1,Line2){ if (bVersion == null) bVersion = verify(); if (bVersion == false) return; if(bInit == false){ xPremiere = efsInternal("calcPremiere",StochLength,Period); addBand(Line1,PS_SOLID,1,Color.blue,"Line1"); addBand(Line2,PS_SOLID,1,Color.blue,"Line2"); addBand(Line1*(-1),PS_SOLID,1,Color.red,"Line3"); addBand(Line2*(-1),PS_SOLID,1,Color.red,"Line4"); addBand(0, PS_SOLID, 1, Color.black, "0"); bInit = true; } var nPremiere = xPremiere.getValue(0); if(nPremiere==null) return; if(nPremiere>=0) setBarFgColor(Color.blue,1); else setBarFgColor(Color.red,1); return new Array (nPremiere,nPremiere);}var xSmoothStoch = null;function calcPremiere(_stochlength,_period){ if(_period<0) var Length = 1; else var Length = Math.sqrt(_period); if(xSmoothStoch==null) xSmoothStoch = ema(Length,ema(Length,efsInternal("normStoch",_stochlength))); var nSmoothStoch = xSmoothStoch.getValue(0); if(nSmoothStoch==null) return; return (Math.exp(1*nSmoothStoch)-1)/(Math.exp(1*nSmoothStoch)+1);}var xStochK = null;function normStoch(_stochlength){ if(xStochK==null) xStochK = stochK(_stochlength,1,1) var nStochK = xStochK.getValue(0); if(nStochK==null) return; return (.1*(nStochK-50));}function verify() { var b = false; if (getBuildNumber() < 999) { drawTextAbsolute(5, 35, "This study requires version 10.1 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;} |
/*********************************Provided By: eSignal (Copyright ) 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: Premier Stochastic Oscillator by Lee LeibfarthVersion: 1.0 6/11/2008Notes:* August 2008 Issue of Stocks and Commodities Magazine* Study requires version 10.1 or later.* Study is back testing compatible.**********************************/function preMain(){ setStudyTitle("PSO Strategy"); setCursorLabelName("PSO", 0); setShowTitleParameters(false); setDefaultFont("Ariel", 11); setColorPriceBars(true); setDefaultPriceBarColor(Color.lightgrey); setStudyMax(1.1); setStudyMin(-1.1); var fp1 = new FunctionParameter("StochLength", FunctionParameter.NUMBER); fp1.setName("Stoch Length"); fp1.setLowerLimit(1); fp1.setDefault(8); var fp2 = new FunctionParameter("Period", FunctionParameter.NUMBER); fp2.setName("Period"); fp2.setLowerLimit(1); fp2.setDefault(25); var fp3 = new FunctionParameter("Line1", FunctionParameter.NUMBER); fp3.setName("Line1"); fp3.setLowerLimit(0); fp3.setDefault(.9); var fp4 = new FunctionParameter("Line2", FunctionParameter.NUMBER); fp4.setName("Line2"); fp4.setLowerLimit(0); fp4.setDefault(.2); var fp5 = new FunctionParameter("Profit", FunctionParameter.NUMBER); fp5.setName("Profit Target %"); fp5.setLowerLimit(0); fp5.setDefault(3); var fp6 = new FunctionParameter("Stop", FunctionParameter.NUMBER); fp6.setName("Stop Loss %"); fp6.setLowerLimit(0); fp6.setDefault(1.5); }var bVersion = null;var bInit = false;var bBT = true;var xPremiere = null;var TargetPrice = 0;var StopPrice = 0;var vPosition = 0; // 1=long, 0=flat, -1=shortfunction main(StochLength,Period,Line1,Line2,Profit,Stop){ if (bVersion == null) bVersion = verify(); if (bVersion == false) return; if (bInit == false) { xPremiere = efsInternal("calcPremiere",StochLength,Period); addBand(Line1,PS_SOLID,1,Color.blue,"Line1"); addBand(Line2,PS_SOLID,1,Color.blue,"Line2"); addBand(Line1*(-1),PS_SOLID,1,Color.red,"Line3"); addBand(Line2*(-1),PS_SOLID,1,Color.red,"Line4"); addBand(0, PS_SOLID, 1, Color.black, "0"); bInit = true; } var nPremiere_0 = xPremiere.getValue(0); var nPremiere_1 = xPremiere.getValue(-1); var nPremiere_2 = xPremiere.getValue(-2); if(nPremiere_2==null) return; if (getCurrentBarIndex() >= -1) bBT = false; if(vPosition == 1 ) { // Long Exit if(high(0)>=TargetPrice) { if (bBT) Strategy.doSell("Long Target",Strategy.LIMIT,Strategy.THISBAR,Strategy.ALL,Math.max(open(0),TargetPrice)); drawShape(Shape.DOWNARROW,TopRow2,Color.green,"LongTarget"+rawtime(0)); drawText("LT",TopRow1,Color.green,Text.CENTER,"LT"+rawtime(0)); vPosition = 0; } if(low(0)<=StopPrice) { if (bBT) Strategy.doSell("Long Stop",Strategy.STOP,Strategy.THISBAR,Strategy.ALL,Math.min(open(0),StopPrice)); drawShape(Shape.DOWNARROW,TopRow2,Color.red,"LongStop"+rawtime(0)); drawText("LS",TopRow1,Color.red,Text.CENTER,"LS"+rawtime(0)); vPosition = 0; } } if(vPosition == -1) { // Short Exit if(low(0)<=TargetPrice){ if (bBT) Strategy.doCover("Short Target",Strategy.LIMIT,Strategy.THISBAR,Strategy.ALL,Math.min(open(0),TargetPrice)); drawShape(Shape.UPARROW,BottomRow2,Color.green,"ShortTarget"+rawtime(0)); drawText("ST",BottomRow1,Color.green,Text.CENTER,"ST"+rawtime(0)); vPosition = 0; } if(high(0)>=StopPrice) { if (bBT) Strategy.doCover("Short Stop",Strategy.STOP,Strategy.THISBAR,Strategy.ALL,Math.max(open(0),StopPrice)); drawShape(Shape.UPARROW,BottomRow2,Color.red,"ShortStop"+rawtime(0)); drawText("SS",BottomRow1,Color.red,Text.CENTER,"SS"+rawtime(0)); vPosition = 0; } } if(getBarState()==BARSTATE_NEWBAR) { // Long Entry if(vPosition != 1 && nPremiere_2>Line1&&nPremiere_1Line2&&nPremiere_1Line1*(-1)||nPremiere_2Line2*(-1)) { if (bBT) Strategy.doShort("Short Entry",Strategy.MARKET,Strategy.THISBAR,Strategy.DEFAULT); drawShape(Shape.DOWNARROW,TopRow2,Color.magenta,"ShortEntry"+rawtime(0)); drawText("SE",TopRow1,Color.magenta,Text.CENTER,"SE"+rawtime(0)); TargetPrice = open(0)*(1-(Profit/100)); StopPrice = open(0)*(1+(Stop/100)); vPosition = -1; } } if (nPremiere_0 >= 0) setBarFgColor(Color.blue); else setBarFgColor(Color.red); if (vPosition == 1) setDefaultPriceBarColor(Color.blue); else if (vPosition == -1) setDefaultPriceBarColor(Color.red); else setDefaultPriceBarColor(Color.lightgrey); return nPremiere_0;}var xSmoothStoch = null;function calcPremiere(_stochlength,_period) { if(_period<0) var Length = 1; else var Length = Math.sqrt(_period); if(xSmoothStoch==null) xSmoothStoch = ema(Length,ema(Length,efsInternal("normStoch",_stochlength))); var nSmoothStoch = xSmoothStoch.getValue(0); if(nSmoothStoch==null) return; return (Math.exp(1*nSmoothStoch)-1)/(Math.exp(1*nSmoothStoch)+1);}var xStochK = null;function normStoch(_stochlength) { if(xStochK==null) xStochK = stochK(_stochlength,1,1) var nStochK = xStochK.getValue(0); if(nStochK==null) return; return (.1*(nStochK-50));}function verify() { var b = false; if (getBuildNumber() < 999) { drawTextAbsolute(5, 35, "This study requires version 10.1 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;} |
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