Volatility with HH / LL

[guterm]

Hello

I would like to see the Volatility (20 days) with a line for the Highiest High and the Lowest Low for 200 bars.

How can I do that?

Daniel

[Doji3333]

it would take someone developing a custom EFS script for you. If you know how to program a little bit - it's not that hard. If not, you could hire one of the custom EFS developers to build it for you.

[emet]

Daniel,

I'm not sure which type of Volatility you prefer to use, I usually work with smoothed ATR. Please see my implementation of your idea below.

EMET

/Developed by EMET
//Volatility with a line for the Highiest High and the Lowest Low

/*
I would like to see the Volatility (20 days) with a line for the Highiest
High and the Lowest Low for 200 bars.
*/

var fpArray = new Array();
var myVolat = null;
var HHVolat = null;
var LLVolat = null;
var bInit = false;

function preMain() {

    setPriceStudy(false);
    setStudyTitle("Volatility & HH/LL");
    setCursorLabelName("Volatility", 0);
    setCursorLabelName("Highest", 1);
    setCursorLabelName("Lowest", 2);    
    setDefaultBarFgColor(Color.green, 0);
    setDefaultBarFgColor(Color.blue, 1);    
    setDefaultBarFgColor(Color.red, 2);        
    setPlotType(PLOTTYPE_LINE, 0); 
    setPlotType(PLOTTYPE_LINE, 1);     
    setPlotType(PLOTTYPE_LINE, 2);     
    setDefaultBarThickness(1, 0);
    setDefaultBarThickness(1, 1);
    setDefaultBarThickness(1, 2);
    
    askForInput();

    var x=0;
    fpArray[x] = new FunctionParameter("Length_Volatility", FunctionParameter.NUMBER);
    with(fpArray[x++]){
        setLowerLimit(1);        
        setDefault(20);
    }
    fpArray[x] = new FunctionParameter("Length_HH_LL", FunctionParameter.NUMBER);
    with(fpArray[x++]){
        setLowerLimit(1);        
        setDefault(200);
    }
    
    fpArray[x] = new FunctionParameter("Show_HH_LL", FunctionParameter.BOOLEAN);
    with(fpArray[x++]){
        setDefault(true);
    }    
  
}

function main(Length_Volatility, Length_HH_LL, Show_HH_LL) {
 var nmyVolat;
 var nHHVolat;
 var nLLVolat;

 if (bInit == false) {
   myVolat = efsInternal("Volatility", Length_Volatility);
   if (Show_HH_LL == true) {
     HHVolat = upperDonchian(Length_HH_LL, myVolat);  
     LLVolat = lowerDonchian(Length_HH_LL, myVolat);
   }
  bInit = true;
 } 

  nmyVolat = myVolat.getValue(0);
   if (Show_HH_LL == true) {
     nHHVolat = HHVolat.getValue(0);
     nLLVolat = LLVolat.getValue(0);
   } 

   if (Show_HH_LL == true) {
     setStudyTitle("Volatility & HH/LL");
     return new Array (nmyVolat, nHHVolat, nLLVolat);
   } else {
     setStudyTitle("Volatility");
     return nmyVolat;
   }
}


function TrueHigh(close1, high_) {
  if (close1 > high_) {
    return close1;
  } else return high_; 
}

function TrueLow(close1,low_) {
  if (close1 < low_) {
    return close1;
  } else return low_; 
}


function TrueRange() {
  return (TrueHigh(close(-1), high(0)) - TrueLow(close(-1), low(0))); 
}


function Volatility(Length){
  var SmoothingFactor = 1/Length;
  var Price = TrueRange();

  if (Price == null) return;
  if (ref(-1) == null) return Price;

  return ref(-1) + SmoothingFactor * (Price - ref(-1));
 
}