/*********************************Provided By: eSignal (Copyright c 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: Trend continuation factor, by M.H. Pee Version: 1.0 12/05/2008Formula Parameters: Default: Length 35 Line Thickness 2 Display Cursor Labels TrueNotes: The related article is copyrighted material. If you are not a subscriber of Stocks & Commodities, please visit www.traders.com.**********************************/var fpArray = new Array();var bInit = false;var bVersion = null;function preMain() { setPriceStudy(false); setShowCursorLabel(false); setShowTitleParameters( false ); setStudyTitle("Trend Continuation Factor "); setCursorLabelName("Zero", 0); setCursorLabelName("Plus TCF", 1); setCursorLabelName("Minus TCF", 2); setDefaultBarFgColor(Color.green, 0); setDefaultBarFgColor(Color.blue, 1); setDefaultBarFgColor(Color.red, 2); setPlotType(PLOTTYPE_LINE, 0); setPlotType(PLOTTYPE_LINE, 1); setPlotType(PLOTTYPE_LINE, 2); setDefaultBarThickness(1, 0); setDefaultBarThickness(1, 1); setDefaultBarThickness(1, 2); askForInput(); var x=0; fpArray[x] = new FunctionParameter("ViewValue", FunctionParameter.BOOLEAN); with(fpArray[x++]){ setName("Display Cursor Labels"); setDefault(true); } fpArray[x] = new FunctionParameter("Length", FunctionParameter.NUMBER); with(fpArray[x++]){ setLowerLimit(1); setDefault(35); } fpArray[x] = new FunctionParameter("Thickness", FunctionParameter.NUMBER); with(fpArray[x++]){ setName("Line Thickness"); setLowerLimit(1); setDefault(2); }}var xChange = null;var xPlusChange = null;var xMinusChange = null;var xPlusCF = null;var xMinusCF = null;function main(Length, Thickness, ViewValue) {var nPlusTCF = 0;var nMinusTCF = 0; if (bVersion == null) bVersion = verify(); if (bVersion == false) return; if ( bInit == false ) { setDefaultBarThickness(Thickness, 0); setDefaultBarThickness(Thickness, 1); setDefaultBarThickness(Thickness, 2); setShowCursorLabel(ViewValue); setShowCursorLabel(false, 0); xChange = efsInternal("Calc_Change"); xPlusChange = efsInternal("Calc_PlusChange", xChange); xMinusChange = efsInternal("Calc_MinusChange", xChange); xPlusCF = efsInternal("Calc_PlusCF", xPlusChange); xMinusCF = efsInternal("Calc_MinusCF", xMinusChange); bInit = true; } nPlusTCF = Summation( xPlusChange, xMinusCF, Length ) ; nMinusTCF = Summation( xMinusChange, xPlusCF, Length ) ; return new Array(0, nPlusTCF, nMinusTCF); }function Summation(xSeries1, xSeries2, nLength){var nRes = 0; for (var i = 0; i < nLength; i++) { nRes += (xSeries1.getValue(-i) - xSeries2.getValue(-i)); } if (nRes == null) nRes = 1; return nRes;}function Calc_MinusCF(xSeries){var nRes = 0;var nRef = 0; nRef = ref(-1); if (nRef == null) nRef = 1; if (xSeries.getValue(0) == 0) nRes = 0; else nRes = xSeries.getValue(0) + nRef; if (nRes == null) nRes = 1; return nRes;}function Calc_PlusCF(xSeries) {var nRes = 0;var nRef = 0; nRef = ref(-1); if (nRef == null) nRef = 1; if (xSeries.getValue(0) == 0) nRes = 0; else nRes = xSeries.getValue(0) + nRef; if (nRes == null) nRes = 1; return nRes;}function Calc_MinusChange(xSeries) {var nRes = 0; if (xSeries.getValue(0) < 0) nRes = xSeries.getValue(0) * (-1); else nRes = 0; if (nRes == null) nRes = 1; return nRes;}function Calc_PlusChange(xSeries) {var nRes = 0; if (xSeries.getValue(0) > 0) nRes = xSeries.getValue(0); else nRes = 0; if (nRes == null) nRes = 1; return nRes;}function Calc_Change(){var nRes = 0; nRes = close(0) - close(-1); if (nRes == null) nRes = 1; return nRes;}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;} |
