/************************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;} |
