RSI_w_Bands.efs

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RSI_w_Bands.efs 
  

File Name: RSI_w_Bands.efs


Description:
Displays RSI with Bollinger Bands appliedto the RSI study.


Formula Parameters:
nRSILength - Length of RSI (Default: 14)
nRSISource - Source for RSI (Default: "Close")
nBandLength - Length of Bollinger Bands (Default: 50)
nStdDev - Standard Deviations for BB (Default: 2.1)

Notes:
Valid inputs for nRSISource: Open, High, Low, Close, HL/2, HLC/3 and OHLC/4

Download File:
RSI_w_Bands.efs




EFS Code:



/************************Copyright � eSignal, 2003*************************Description: Displays RSI with Bollinger Bands appliedto the RSI study.Inputs:nRSILength - Length of RSI (Default: 14)nRSISource - Source for RSI (Default: "Close")nBandLength - Length of Bollinger Bands (Default: 50)nStdDev - Standard Deviations for BB (Default: 2.1)*/var study = null;var study2 = null;function preMain() {    setDefaultBarFgColor(Color.blue, 0); // upper    setDefaultBarFgColor(Color.red, 1); // basis    setDefaultBarFgColor(Color.blue, 2); // lower        setStudyTitle("RSI w/ Bands");    setCursorLabelName("Upper",0);    setCursorLabelName("Basis",1);    setCursorLabelName("Lower",2);    setCursorLabelName("RSI",3);            setDefaultBarFgColor(Color.blue,0);    setDefaultBarFgColor(Color.red,1);    setDefaultBarFgColor(Color.blue,2);    setDefaultBarFgColor(Color.aqua,3);}function main(nRSILength,nRSISource,nBandLength,nStdDev) {    if (nRSILength == null) nRSILength = 14;    if (nRSISource == null) nRSISource = verifySource(nRSISource);    if (nBandLength == null) nBandLength = 50;    if (nStdDev == null) nStdDev = 2.1;    if (study == null) study = new RSIStudy(nRSILength, nRSISource);    if (study2 == null) study2 = new BollingerStudy(nBandLength, study, RSIStudy.RSI, nStdDev)    var vRSI   = study.getValue(RSIStudy.RSI);    var vUpper = study2.getValue(BollingerStudy.UPPER);    var vBasis = study2.getValue(BollingerStudy.BASIS);    var vLower = study2.getValue(BollingerStudy.LOWER);            return new Array(vUpper, vBasis, vLower, vRSI);}/*** Utility Function ***/// Verifies source input and returns valid sourcefunction verifySource(nSource) {        if (nSource == "close" || nSource =="C" ||         nSource =="Close" || nSource =="c") {            nSource = "Close";                } else if (nSource == "open" || nSource =="O" ||         nSource =="Open" || nSource =="o") {            nSource = "Open";                } else if (nSource == "high" || nSource =="H" ||         nSource == "High" || nSource == "h") {            nSource = "High";                } else if (nSource == "low" || nSource =="L" ||         nSource =="Low" || nSource =="l") {            nSource = "Low";                } else if (nSource == "hl/2" || nSource =="HL2" ||         nSource =="HL/2" || nSource =="hl2") {            nSource = "HL/2";                } else if (nSource == "hlc/3" || nSource =="hlc3" ||         nSource =="HLC/3" || nSource =="HLC3") {            nSource = "HLC/3";                } else if (nSource == "ohlc/4" || nSource =="ohlc4" ||         nSource =="OHLC/4" || nSource =="OHLC4") {            nSource = "OHLC/4";                } else {            nSource = "Close";    }        return nSource;}