/*********************************Provided By: Interactive Data Corporation (Copyright ?? 2013) All rights reserved. This sample eSignal Formula Script (EFS) is for educational purposes only. Interactive Data Corporation reserves the right to modify and overwrite this EFS file with each new release. Description: High-Low ZigZag indicator Version: 1.00 10/04/2013Formula Parameters: Default:ZigZag percent 5ATR Look back Period 5ZigZag ATR factor 1.5Color of ZigZag lines blueLines Width 1Notes: The related article is copyrighted material. If you are not a subscriber of Stocks & Commodities, please visit www.traders.com.**********************************/var pArray = new Array();function preMain(){ setStudyTitle("High-Low ZigZag indicator"); setComputeOnClose(); setPriceStudy(true); var x = 0; pArray[x] = new FunctionParameter("fpZigZagPercentage", FunctionParameter.NUMBER); with(pArray[x++]) { setName("ZigZag percent"); setLowerLimit(0); setDefault(5); } pArray[x] = new FunctionParameter("fpATRPeriod", FunctionParameter.NUMBER); with(pArray[x++]) { setName("ATR Look back Period"); setLowerLimit(1); setDefault(5); } pArray[x] = new FunctionParameter("fpATRFactor", FunctionParameter.NUMBER); with(pArray[x++]) { setName("ZigZag ATR factor"); setLowerLimit(0); setDefault(1.5); } pArray[x] = new FunctionParameter("fpZigZagColor", FunctionParameter.COLOR); with(pArray[x++]) { setName("Color of ZigZag lines"); setDefault(Color.blue); } pArray[x] = new FunctionParameter("fpLineWidth", FunctionParameter.NUMBER); with(pArray[x++]) { setName("Lines Width"); setLowerLimit(1); setDefault(1); }}var nTrend = 0; var nLHb = 0; var nLLb = 0; var nHH = 0; var bLL = 0; var nDownlineID = 0; var nUplineID = 0; var nHLPivot = 0; var xATR = null;var bInit = false;var bVersion = null;function main(fpZigZagPercentage, fpATRPeriod, fpATRFactor, fpZigZagColor, fpLineWidth){ if (bVersion == null) bVersion = verify(); if (bVersion == false) return; if(!bInit) { xATR = atr(fpATRPeriod); bInit = true; } var nBarNumber = getCurrentBarCount(); if(nBarNumber < 2) { bLL = low(0); nHH = high(0); nLLb = nLHb = 1; nUplineID = nDownlineID = nBarNumber; nTrend = 1; return; } var nATR = xATR.getValue(0); if (nATR == null) return; if(fpATRFactor == 0) { nHLPivot = fpZigZagPercentage * 0.01; } else { if (fpZigZagPercentage == 0) { nHLPivot = nATR / close(0) * fpATRFactor; } else { nHLPivot = fpZigZagPercentage * 0.01 + nATR / close(0) * fpATRFactor; } } if (nTrend > 0) { if (high(0) >= nHH) { nHH = high(0); nLHb = nBarNumber; drawLineRelative(-(nBarNumber - nLLb), bLL, 0, nHH, PS_SOLID, fpLineWidth, fpZigZagColor, nUplineID); } else if (low(0) < nHH - nHH * nHLPivot) { bLL = low(0); nLLb = nBarNumber; nDownlineID = nBarNumber; nTrend = -1; drawLineRelative(-(nBarNumber - nLHb), nHH, 0, bLL, PS_SOLID, fpLineWidth, fpZigZagColor, nDownlineID); } } else { if (low(0) <= bLL) { bLL = low(0); nLLb = nBarNumber; drawLineRelative(-(nBarNumber - nLHb), nHH, 0, bLL, PS_SOLID, fpLineWidth, fpZigZagColor, nDownlineID); } else if (high(0) > bLL + bLL * nHLPivot) { nHH = high(0); nLHb = nBarNumber; nUplineID = nBarNumber; nTrend = 1; drawLineRelative(-(nBarNumber - nLLb), bLL, 0, nHH, PS_SOLID, fpLineWidth, fpZigZagColor, nUplineID); } }}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;} |
