GetStochStudy() for a different interval

[neoikon]

Hello,

I have an EFS script where I want to determine the stochastic situation for a different interval. How would I do that?

For example, if I am viewing a 3-min chart, I'd like to know the stochastic direction on the 5-min and the 30-min interval.

When you load the stochastic study, I don't see how so specify the interval in any way: var studyStoch = new GetStochStudy( 14, 3, 3 );


Thanks!
Daniel

[ACM]

Re: GetStochStudy() for a different interval

Daniel
The GetXxx() studies have not been ported to efs at this time so they do not have the capability on their own to be based on an external symbol and/or interval (like the efs2 studies).
However you can calculate one of these studies in a separate function [within the same efs] or in a different efs and then call either one using the efsInternal() or efsExternal() functions and passing as the last parameter the external symbol and/or interval through the sym() or inv() functions. This will allow you to control the context in which the separate function or efs is running and at the same time will create a series.
In this post you can find a basic example of how to call an efs1 function which like the GetStochStudy() function is not enabled for use with multiple intervals and/or symbols.
For the description and syntax required by the efsInternal() and efsExternal() functions see the links to the corresponding articles in the EFS KnowledgeBase.
Alex

Originally posted by neoikon
Hello,

I have an EFS script where I want to determine the stochastic situation for a different interval. How would I do that?

For example, if I am viewing a 3-min chart, I'd like to know the stochastic direction on the 5-min and the 30-min interval.

When you load the stochastic study, I don't see how so specify the interval in any way: var studyStoch = new GetStochStudy( 14, 3, 3 );


Thanks!
Daniel

[neoikon]

I tried to create a simple script to get this to work and keep getting null returned for the value that I care about most (StochK2).

"StochK" returns the expected value.
"StochK2" returns null
"testVal" returns the expected value.

Am I missing something? Thanks!

function preMain()
{
    debugClear();
    
    setPriceStudy(true);
    setShowCursorLabel( false );
    setShowTitleParameters(false);

    setStudyTitle("Test");
}


var InvShort = "377T";

function main()
{    
    var studyStoch = new GetStochStudy( 14, 3, 3 );    // GetStochStudy( nLength, nMavg1, nMavg2 )
    var StochK = studyStoch.getValue(GetStochStudy.STOCHK,0);
  
    var studyStoch2 = efsInternal( "getStochStudyCustom", sym(getSymbol()+","+InvShort) );
    var StochK2 = studyStoch2.getValue(GetStochStudy.STOCHK,0);
    
    var testVal = efsInternal("simpletest",sym(getSymbol()+","+InvShort));
    
    debugPrintln( StochK + " " + StochK2 + " " + testVal);
}


// Called as an "efsInternal" which allows us to specify the interval context
//
function getStochStudyCustom()
{
    return new GetStochStudy( 14, 3, 3 );    // GetStochStudy( nLength, nMavg1, nMavg2 )
}

function simpletest() 
{
    return close(0);
} 

[neoikon]

To answer my own question, it seems that using the method that I posted earlier would equate to returning an array of arrays, which it seems EFS can't handle (I've run into that frustrating problem in the past). So, to fix that problem, you have to return each array separately, via separate calls.

Updated code that seems to work:

function preMain()
{
    debugClear();
    
    setPriceStudy(true);
    setShowCursorLabel( false );
    setShowTitleParameters(false);

    setStudyTitle("efsInternal Test");
}


var InvShort = "610T";

function main()
{    
    // Wait until last bar drawn before we do our stuff
    //if (getCurrentBarIndex() != -1)  {return;}
    
    var studyStoch = new GetStochStudy( 14, 3, 3 );    // GetStochStudy( nLength, nMavg1, nMavg2 )
    var StochK = studyStoch.getValue(GetStochStudy.STOCHK,0);
  
    var studyStochCustK = efsInternal( "getStochStudyCustomK", sym(getSymbol()+","+InvShort) ).getValue(0);
    var studyStochCustD = efsInternal( "getStochStudyCustomD", sym(getSymbol()+","+InvShort) ).getValue(0);
    var studyStochCustMarks = efsInternal( "getStochStudyCustomMarks", sym(getSymbol()+","+InvShort) ).getValue(0);
   
    var testVal = efsInternal("simpletest",sym(getSymbol()+","+InvShort));
    
       debugPrintln( StochK + " " + studyStochCustK + " " + studyStochCustD + " " + studyStochCustMarks);
}


// Called as an "efsInternal" which allows us to specify the interval context
//
var studyStochCustom = null;
function getStochStudyCustomK()
{
    if (studyStochCustom==null) studyStochCustom = new GetStochStudy( 14, 3, 3 );    // GetStochStudy( nLength, nMavg1, nMavg2 )
    return studyStochCustom.getValue(GetStochStudy.STOCHK);
}
function getStochStudyCustomD()
{
    if (studyStochCustom==null) studyStochCustom = new GetStochStudy( 14, 3, 3 );    // GetStochStudy( nLength, nMavg1, nMavg2 )
    return studyStochCustom.getValue(GetStochStudy.STOCHD);
}
function getStochStudyCustomMarks()
{
    if (studyStochCustom==null) studyStochCustom = new GetStochStudy( 14, 3, 3 );    // GetStochStudy( nLength, nMavg1, nMavg2 )
    return studyStochCustom.getValue(GetStochStudy.MARKS);
}

function simpletest() 
{
    return close(0);
} 

[dan4665]

Daniel,
Thanks for the interesting post, for a while now I've been trying to work out a similar method or formula (running an alternate time interval chart within a page). My Java programing skills are very basic, I tried coping your latest code and running, but it oviously calls other formulas and gives an error. How would I set this up to make it functional?
Thanks for your help.
Dan

[neoikon]

Originally posted by dan4665
Daniel,
Thanks for the interesting post, for a while now I've been trying to work out a similar method or formula (running an alternate time interval chart within a page). My Java programing skills are very basic, I tried coping your latest code and running, but it oviously calls other formulas and gives an error. How would I set this up to make it functional?
Thanks for your help.
Dan

Dan,
The code should be functional. What error are you getting? Perhaps you are having an issue due to not having AGET? That GetStochStudy() is an AGET only call (I believe).

Daniel

[dan4665]

No, I don't have AGET... so that explains the error message 'line 21, GetStochStudy not enabled'.
Thanks for your help,
Dan