/*********************************Provided By: Interactive Data Corporation (Copyright ?? 2012) 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: Introducing SwamiCharts by John Ehlers Version: 2.00 17/02/2012Formula Parameters: Default:Fastest Period 6Lowest Period 48Line Thickness 5Notes: The related article is copyrighted material. If you are not a subscriber of Stocks & Commodities, please visit www.traders.com.**********************************/var fpArray = new Array();function preMain () { setStudyTitle("SwamiCharts_Stochastic"); setShowCursorLabel(false); setComputeOnClose(true); var x=0; fpArray[x] = new FunctionParameter("fastPeriod", FunctionParameter.NUMBER); with(fpArray[x++]) { setName("Fastest Period"); setLowerLimit(1); setUpperLimit(20); setDefault(6); } fpArray[x] = new FunctionParameter("slowPeriod", FunctionParameter.NUMBER); with(fpArray[x++]) { setName("Lowest Period"); setLowerLimit(40); setUpperLimit(100); setDefault(48); } fpArray[x] = new FunctionParameter("lineThickness", FunctionParameter.NUMBER); with(fpArray[x++]) { setName("Line Thickness"); setLowerLimit(1); setUpperLimit(20); setDefault(5); } }var bInit = false;var bVersion = null;var resArray = null;var xhhArray = null;var xllArray = null;var numArray = null;var denomArray = null;var stochArray = null;function main (fastPeriod, slowPeriod, lineThickness) { if (bVersion == null) bVersion = verify(); if (bVersion == false) return; if (!bInit) { resArray = new Array(); xhhArray = new Array(); xllArray = new Array(); numArray = new Array(); denomArray = new Array(); stochArray = new Array(); for (var i = fastPeriod; i <= slowPeriod; i++) { resArray.push(i); xhhArray.push(hhv(i, high())); xllArray.push(llv(i, low())); numArray.push(0); denomArray.push(0); stochArray.push(0); setDefaultBarThickness(lineThickness, i - fastPeriod); } bInit = true; } for (var i = 0; i <= slowPeriod - fastPeriod; i++) { var vhh = xhhArray[i].getValue(0); var vll = xllArray[i].getValue(0); if (vhh == null || vll == null) return; numArray[i] = (close(0) - vll + numArray[i]) / 2; denomArray[i] = (vhh - vll + denomArray[i]) / 2; if (denomArray[i] != 0) stochArray[i] = 0.2 * (numArray[i] / denomArray[i]) + 0.8 * stochArray[i]; var colorR = 255; var colorG = 255; var colorB = 0; if (stochArray[i] > 0.5) { colorR = Math.floor(255 * (2 - 2 * stochArray[i])); } else { colorG = Math.floor(255 * 2 * stochArray[i]); } setBarFgColor(Color.RGB(colorR, colorG, colorB), i); } return resArray;}// verify versionfunction 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;} |
