efsInternal call/return question

[buzzhorton]

I want to call this function on the last bar of the chart.

I really do NOT want a series ( it chews up cpu cycles ) but I was following the example I found.

What is the proper call/return?

So far:

    if (bInit == false) {

        xRocket = efsInternal("fRocket", iBars, close());

        xTank   = efsInternal("fTank", iBars, close());

        bInit = true;
    } 

And

// ROCKET FUNCTION

function fRocket(length, price) {

    var MyVal = 0;
    var MyBar = 0;
    var n;
    var fStop = length + 1 ; 

  if( fStop > 1 && fStop < 20 ) {
    for(n=1;n<fStop;n++) {
       var x = price.getValue(0) - price.getValue(-n) ;
       if( x > MyVal) {
         MyVal = x ;
         MyBar = n ;
       }
      }
     }
 
return new Array( getSeries(MyVal), getSeries(MyBar) ) ;
} 

Thanking You In Advance.

P.S. what this will do is alert me when an instrument rises a threshold amount within a certain number of bars.

[eSignal_JasonK]

Re: efsInternal call/return question

Hello Avery,

Originally posted by buzzhorton
I want to call this function on the last bar of the chart.

I really do NOT want a series ( it chews up cpu cycles ) but I was following the example I found.

What is the proper call/return?

So far:

    if (bInit == false) {

        xRocket = efsInternal("fRocket", iBars, close());

        xTank   = efsInternal("fTank", iBars, close());

        bInit = true;
    } 

And

// ROCKET FUNCTION

function fRocket(length, price) {

    var MyVal = 0;
    var MyBar = 0;
    var n;
    var fStop = length + 1 ; 

  if( fStop > 1 && fStop < 20 ) {
    for(n=1;n<fStop;n++) {
       var x = price.getValue(0) - price.getValue(-n) ;
       if( x > MyVal) {
         MyVal = x ;
         MyBar = n ;
       }
      }
     }
 
return new Array( getSeries(MyVal), getSeries(MyBar) ) ;
} 

Thanking You In Advance.

P.S. what this will do is alert me when an instrument rises a threshold amount within a certain number of bars.

If you don't need the results in a Series Object then you can just call the fRocket function directly from within main(). To prevent the function or main() from executing until bar 0 you can check for the bar index of 0 using getCurrentBarIndex() and exit the formula if it is less than 0. Try the following.

function main() {
    if (getCurrentBarIndex() < 0) return; // exit unless on bar 0.
    
    var length = 10;
    var price = close();    
    var aValues = fRocket(length, price);
    if (aValues == null) return;
    
    return new Array(aValues[0], aValues[1]);    
}

function fRocket(length, price) {

    var MyVal = 0;
    var MyBar = 0;
    var n;
    var fStop = length + 1 ; 

    if( fStop > 1 && fStop < 20 ) {
        for(n=1;n<fStop;n++) {
            var x = price.getValue(0) - price.getValue(-n) ;
            if( x > MyVal) {
                MyVal = x ;
                MyBar = n ;
            }
        }
    }
 
    return new Array(MyVal, MyBar);
} 

[buzzhorton]

Thanks Jason...

Now I can continue with this study.