Creating series... still a mystery.

[buzzhorton]

This is what I had to do to create a series for high(0) - close(0) and close(0) - low(0):

var diff1 =0;
var diff2 =0;

     if(xInit==false){

   xDiff1 =  efsInternal( "fDiff", close(), low() ); 

   xDiff2 =  efsInternal( "fDiff", high(), close() ); 
   
         xInit=true;

     } // xInit 
      

return new Array( xDiff1.getValue(0) , xDiff2.getValue(0) )

function fDiff( x , y) { 
   return( eval(x.getValue(0) - y.getValue(0) ) ); 
} 

My question is why doesn't the following work:

var diff1 =0;
var diff2 =0;

     if(xInit==false){

   xDiff1 =   close() -  low() ; 

   xDiff2 =  high() -  close() ; 
   
         xInit=true;

     } // xInit 
      

return new Array( xDiff1.getValue(0) , xDiff2.getValue(0) ) 

[ACM]

buzzhorton
As with a Javascript array where if you apply some math to the array the result is not an array but a value (ie var myVar = myArray[0] + x does not result in myVar being an array but a single value) the same happens with a series which is an enhanced form of an array specific to eSignal.
If you need to perform some math operations on a series and return a series you need to do them in a separate function or efs and then call them through efsInternal() or efsExternal() which will create the series.
Alex