/*********************************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: DAPD - Daily Average Price Delta. Version: 1.0 09/26/2008Notes: This indicator is similar to Bollinger Bands. It based on DAPD - Daily Average Price Delta. DAPD is based upon a summation for each of the highs (hod) for the 21 days prior to today minus the summation for each of the lows (lod) for the last 21 days prior to today. The result of this calculation would then be divided by 21. Formula Parameters: Default: Length 21**********************************/var fpArray = new Array();var bInit = false;function preMain(){ setStudyTitle("DAPD"); setCursorLabelName("Top DAPD", 0); setCursorLabelName("Bottom DAPD", 1); setDefaultBarFgColor(Color.blue, 0); setDefaultBarFgColor(Color.blue, 1); setPlotType(PLOTTYPE_LINE, 0); setPlotType(PLOTTYPE_LINE, 1); setDefaultBarThickness(1, 0); setDefaultBarThickness(1, 1); setPriceStudy(true); var x=0; fpArray[x] = new FunctionParameter("Length", FunctionParameter.NUMBER); with(fpArray[x++]){ setLowerLimit(1); setDefault(21); } }var xHighSMA = null;var xLowSMA = null;function main(Length) {var nState = getBarState();var nDAPD = 0; if (nState == BARSTATE_ALLBARS) { if (Length == null) Length = 21; } if ( bInit == false ) { xHighSMA = sma(Length, high()); xLowSMA = sma(Length, low()); bInit = true; } if (getCurrentBarCount() < Length) return; nDAPD = xHighSMA.getValue(0) - xLowSMA.getValue(0); return new Array(high(0) + nDAPD, low(0) - nDAPD);} |
