Does this create a series?

[buzzhorton]

Does this create a series?

    if(bInit==false){
        if(Symbol == null || Symbol == undefined ) Symbol = getSymbol();

 
          xAvgr1c1  = eval( iParm01 );
          xAvgr1c2  = eval( iParm02 );

        bInit=true; } 

If not, what's the reason it doesn't and is there a way to make it create a series?

THANKING YOU IN ADVANCE.

[buzzhorton]

What's the reason this doesn't create a series or does it?

What's the reason this doesn't create a series or does it?

Am I missing something?

function main () {

// CREATE SERIES
 
if(bInit == false) {

var xStudy = efsInternal("fEval", iParm01 ) ;

    bInit = true ; }


zStudy =  xStudy.getValue(0) ;

return (zStudy)  ; 
}


function fEval(xFunction) {

rEval = eval( xFunction) ;

return( rEval );
} 

[eSignal_JasonK]

Hello Avery,

It could if the iParm variables contain strings that represent the correct syntax that would result in a series, such as "ema(10)".

[buzzhorton]

Thanks Jason.

I figured this out in another thread.

Step 1: pass the input parameter functions (iParm01, iParm02) as parameters to the main function.

Step 2: call the internal function fEVAL to evaluate the input parameters.

Step3: fEVAL runs eval to evaluate the input parameter functions and returns the value.

This creates a series!

All of the eSignal internal functions are available in the dropdown menu.

You can use inv() and sym() in the functions - this gives you total flexibility and eliminates coding.

If only I could pass a parameter to setPriceStudy!!

In the screenshot, I am plotting mom(10) and mom(20)

var xStudy2 = null;
var xStudy1 = null; 

var fpArray = new Array();


    var x=0;
        fpArray[x] = new FunctionParameter("iParm01", FunctionParameter.STRING);
    with(fpArray[x++]){
        addOption("accDist()");   
        addOption("adx(10,5)");  
        addOption("pdi(10,5)");
        addOption("ndi(10,5)");
        addOption("cci(10)");
        addOption("chop(10)");
        addOption("ema(10)");
        addOption("sma(10)");
        addOption("wma(10)");
        addOption("hhv( 50, high() )");
        addOption("hl2()");    
        addOption("hl3()");  
        addOption("ohlc4() ");
        addOption("llv( 50, low() )");
        addOption("macd( 12, 26, 9 )");  
        addOption("macdSignal( 12, 26, 9 )");  
        addOption("macdHist( 12, 26, 9 )");  
        addOption("upperBB( 20, 2 )");  
        addOption("middleBB( 20, 2 )");  
        addOption("lowerBB( 20, 2 )");  
        addOption("upperDonchian( 20 )");  
        addOption("middleDonchian( 20 )");  
        addOption("lowerDonchian( 20 )");  
        addOption("upperEnv( 20, false, 10 )");  
        addOption("middleEnv( 20, false, 10 )");  
        addOption("upperEnv( 20, false, 10 )");  
        addOption("upperLinearReg( 20, 2 ) ");  
        addOption("middleLinearReg( 20, 2 ) ");  
        addOption("lowerLinearReg( 20, 2 ) "); 
        addOption("midpoint( 50, close() )");  
        addOption("moneyFlow( 20 )");
        addOption("mom( 20 ) ");
        addOption("oi(0)");
        addOption("osc( 10, 21, false )");
        addOption("percentR( 10 )");
        addOption("roc( 20 )");
        addOption("rsi( 14 )");
        addOption("sar( 0.02, 0.02, 0.2 )");
        addOption("stochK( 14, 1, 3 )");
        addOption("stochD( 14, 1, 3 ) ");
        addOption("volume(0)");
        setDefault("close(0)"  );
    }
    fpArray[x] = new FunctionParameter("iParm02", FunctionParameter.STRING);
    with(fpArray[x++]){
        addOption("accDist()");   
        addOption("adx(10,5)");  
        addOption("pdi(10,5)");
        addOption("ndi(10,5)");
        addOption("cci(10)");
        addOption("chop(10)");
        addOption("ema(10)");
        addOption("sma(10)");
        addOption("wma(10)");
        addOption("hhv( 50, high() )");
        addOption("hl2()");    
        addOption("hl3()");  
        addOption("ohlc4() ");
        addOption("llv( 50, low() )");
        addOption("macd( 12, 26, 9 )");  
        addOption("macdSignal( 12, 26, 9 )");  
        addOption("macdHist( 12, 26, 9 )");  
        addOption("upperBB( 20, 2 )");  
        addOption("middleBB( 20, 2 )");  
        addOption("lowerBB( 20, 2 )");  
        addOption("upperDonchian( 20 )");  
        addOption("middleDonchian( 20 )");  
        addOption("lowerDonchian( 20 )");  
        addOption("upperEnv( 20, false, 10 )");  
        addOption("middleEnv( 20, false, 10 )");  
        addOption("upperEnv( 20, false, 10 )");  
        addOption("upperLinearReg( 20, 2 ) ");  
        addOption("middleLinearReg( 20, 2 ) ");  
        addOption("lowerLinearReg( 20, 2 ) "); 
        addOption("midpoint( 50, close() )");  
        addOption("moneyFlow( 20 )");
        addOption("mom( 20 ) ");
        addOption("oi(0)");
        addOption("osc( 10, 21, false )");
        addOption("percentR( 10 )");
        addOption("roc( 20 )");
        addOption("rsi( 14 )");
        addOption("sar( 0.02, 0.02, 0.2 )");
        addOption("stochK( 14, 1, 3 )");
        addOption("stochD( 14, 1, 3 ) ");
        addOption("volume(0)");
        setDefault("ema(20)"  );
    }

var bInit = false; 

function preMain(){
    setPriceStudy(false);
    setStudyTitle("TRO_Eval");
}

askForInput();

function main(  iParm01, iParm02 ){

    if ( bInit == false ) { 
        
   xStudy2 = efsInternal( "fEVAL", iParm02 ); 

   xStudy1  = efsInternal( "fEVAL", iParm01  ); 
 
   bInit = true; 

   } 

    setCursorLabelName(iParm01, 0);
    setCursorLabelName(iParm02, 1);

     setBarFgColor(Color.red, 0);
     setBarFgColor(Color.green, 1);

    return new Array( xStudy1.getValue(0)  , xStudy2.getValue(0)   );
}

function fEVAL( x) { 
   return( eval(x) ); 
}