/*********************************Provided By: eSignal (Copyright c eSignal), a division of Interactive Data Corporation. 2009. 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: Indicator of Trend Alteration Version: 1.0 06/16/2009 Formula Parameters: Default: Trigger 16 Notes:**********************************/var fpArray = new Array();var bInit = false;function preMain(){ setPriceStudy(false); setShowCursorLabel(true); setShowTitleParameters(false); setStudyTitle("Trend Alteration"); setCursorLabelName("TAUp", 0); setDefaultBarFgColor(Color.red, 0); setPlotType(PLOTTYPE_HISTOGRAM, 0); setDefaultBarThickness(2, 0); setCursorLabelName("TADn", 1); setDefaultBarFgColor(Color.blue, 1); setPlotType(PLOTTYPE_HISTOGRAM, 1); setDefaultBarThickness(2, 1); var x = 0; fpArray[x] = new FunctionParameter("Trigger", FunctionParameter.NUMBER); with(fpArray[x++]) { setLowerLimit(1); setDefault(16); } }var xTAUp = null;var xTADn = null;function main(Trigger) {var nBarState = getBarState();var nTAUp = 0;var nTADn = 0; if (nBarState == BARSTATE_ALLBARS) { if(Trigger == null) Trigger = 16; } if (bInit == false) { addBand(0, PS_SOLID, 1, Color.black, "Zero"); xTAUp = efsInternal("Calc_TrendAlteration", Trigger); xTADn = getSeries(xTAUp, 1); bInit = true; } nTAUp = xTAUp.getValue(0); nTADn = xTADn.getValue(0); if (nTAUp == null) return; return new Array(nTAUp, nTADn);}var bSecondInit = false;var xHigh = null;var xLow = null;function Calc_TrendAlteration(Trigger) {var nRes1 = 0;var nRes2 = 0;var nPrice = 0; if (bSecondInit == false) { xHigh = high(); xLow = low(); bSecondInit = true; } if (xHigh.getValue(-Trigger) == null) return; nPrice = xHigh.getValue(0); if (nPrice > xHigh.getValue(-1)) { nRes1 = 1; while (nPrice > xHigh.getValue(-nRes1) && nRes1 < Trigger) { nRes1++; } } nPrice = xLow.getValue(0); if (nPrice < xLow.getValue(-1)) { nRes2 = 1; while (nPrice < xLow.getValue(-nRes2) && nRes2 < Trigger) { nRes2++; } nRes2 = -nRes2; } return new Array(nRes1, nRes2);} |
