Decimal precision of MACD

[mbnolan]

Does anybody know if its possible to increase the decimal places on the MACD Signal line and the MACD line from 2 to 4 places.

[buzzhorton]

Is this what you wanted?

/*************************************
Alexis C. Montenegro © July 2003                          
Use and/or modify this code freely. If you redistribute it
please include this and/or any other comment blocks and a 
description of any changes you make.      


Modifying Programmer:  Avery T. Horton, Jr.   
 
Added inputs for decimals places and button
                
**********************************/

var vMACD = null;

function preMain() {
    setStudyTitle("TRO_MACD");
    setCursorLabelName("MACDHist",0);
    setCursorLabelName("MACD",1);
    setCursorLabelName("MACDSig",2);
    setDefaultBarFgColor(Color.magenta,0); 
    setDefaultBarFgColor(Color.blue,1); 
    setDefaultBarFgColor(Color.red,2); 
    setDefaultBarThickness(1,0);
    setDefaultBarThickness(1,1);
    setDefaultBarThickness(1,2);
    setPlotType(PLOTTYPE_HISTOGRAM); 
    

    var iDecimals = new FunctionParameter("iDecimals", FunctionParameter.NUMBER);
    iDecimals.setDefault(4 )


    var iButtonX = new FunctionParameter("iButtonX", FunctionParameter.NUMBER);
    iButtonX.setDefault( 50 ); 

    var iButtonY = new FunctionParameter("iButtonY", FunctionParameter.NUMBER);
    iButtonY.setDefault( 15 ); 


    var iFontSize = new FunctionParameter("iFontSize", FunctionParameter.NUMBER);
    iFontSize.setDefault( 10 ); 

    var fp1 = new FunctionParameter("Fast", FunctionParameter.NUMBER);
    fp1.setLowerLimit(1);        
    fp1.setDefault(12); //Edit this value to set a new default    
    
    var fp2 = new FunctionParameter("Slow", FunctionParameter.NUMBER);
    fp2.setLowerLimit(1);        
    fp2.setDefault(26); //Edit this value to set a new default    
    
    var fp3 = new FunctionParameter("Smoothing", FunctionParameter.NUMBER);
    fp3.setLowerLimit(1);        
    fp3.setDefault(9); //Edit this value to set a new default    
    
    var fp4 = new FunctionParameter("Source", FunctionParameter.STRING);
    fp4.setName("Source");
    fp4.addOption("Close");
    fp4.addOption("High");
    fp4.addOption("Low");
    fp4.addOption("Open");
    fp4.addOption("HL/2");
    fp4.addOption("HLC/3");
    fp4.addOption("OHLC/4");
    fp4.setDefault("Close"); //Edit this value to set a new default    
    
    var fp5 = new FunctionParameter("TypeOsc", FunctionParameter.BOOLEAN);
    fp5.setName("SMA (Oscillator)");
    fp5.setDefault(false); //Edit this value to set a new default    
    
    var fp5 = new FunctionParameter("TypeSig", FunctionParameter.BOOLEAN);
    fp5.setName("SMA (Signal)");
    fp5.setDefault(true); //Edit this value to set a new default    
        
}

function main(Fast, Slow, Smoothing, Source, TypeOsc, TypeSig , 
              iDecimals , iFontSize, iButtonX, iButtonY) {

  // initialize upon first loading formula
    if(getBarState() == BARSTATE_ALLBARS) {
        drawTextPixel(iButtonX, iButtonY, " TRO_MACD @URL=EFS:editParameters", Color.white, Color.green, 
            Text.RELATIVETOLEFT|Text.RELATIVETOBOTTOM|Text.ONTOP|Text.BOLD|Text.BUTTON, 
            "Comic Sans MS", 13, "UpExp"); 
        vDate = new Date();
        vInterval = getInterval();
        vSymbol = getSymbol().toUpperCase();
    
        // for RTH, eg, to convert, ES Z2 to ES Z2=2
        var rootSymbol = vSymbol.substring(0,3);
        if (rootSymbol == "ES " || rootSymbol == "NQ ") 
            if ( vSymbol.indexOf("=2") == -1 ) vSymbol += "=2";
    
        vSymbol += ",D";
        return null;
    }

    if (vMACD == null) vMACD = new MACDStudy(Fast, Slow, Smoothing, Source, TypeOsc, TypeSig);
            
/*********************************************
Insert your code following this text block    
Use vMACD.getValue(MACDStudy.HIST) and        
vMACD.getValue(MACDStudy.MACD) and            
vMACD.getValue(MACDStudy.SIGNAL) for your code
**********************************************/


//  return new Array(vMACD.getValue(MACDStudy.HIST),vMACD.getValue(MACDStudy.MACD),vMACD.getValue(MACDStudy.SIGNAL));


var xHist = rnd( vMACD.getValue(MACDStudy.HIST) , iDecimals);
var xMACD = rnd( vMACD.getValue(MACDStudy.MACD) , iDecimals);
var xSIGNAL = rnd( vMACD.getValue(MACDStudy.SIGNAL) , iDecimals);

return new Array( xHist , xMACD , xSIGNAL ) ;
   
}


function editParameters() {
    askForInput("TRO_MACD");
    return;
}


// rnd function - round to iDecimals places
function rnd(value, iDecimals ) {  

value =  value * Math.pow(10, iDecimals);

    return Math.round(value, iDecimals) / Math.pow(10, iDecimals);
}