Creating a series from the substraction of two other series

[waynecd]

Hi,

I'm trying to create a series by substracting the current value of two other series.

I know the script below plots fine but I need to access the last value of that created series using Series.getValue(0) for use in a larger efs study.

As I understand it, the output of efsInternal should create a series as in:

debugClear();

function preMain() {
    setPriceStudy(false);
}

function main() {

    DIFF = test();

    return DIFF;
}
/ *************************************************
             SUPPORT FUNCTIONS                    
**************************************************/    
var xPDI = null;
var xNDI = null;

function test(){

    xPDI = pdi(10,12);
    xNDI = ndi(10,12);

    return xPDI.getValue(0)-xNDI.getValue(0);
} 

But I have only been able to create a single value. It plots fine but I need it as a series. I've tried many variations, even including the DIFF = Test(); within a bInit routine but that doesn't work either.

I appreciate any help.

wayne

Hi Wayne,

You need to use the efsInternal() to obtain a series like you described. However you did not use efsInternal()...

[waynecd]

Hi Steve,

What a brain lapse.

Thanks

Wayne

[waynecd]

In an attempt to make this post worthwhile, here is my solution to my original post for those who may have a use for it.

debugClear();
var bInit = false;

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

function main( ) {

    if(bInit == false){
        bInit = true;
    }
    DIFF = efsInternal("PDI_NDI_DIFF");
    vDiff = DIFF.getValue(0);
    //debugPrintln(vDiff);

    return DIFF;
}
/*******************************************
             SUPPORT FUNCTIONS              
********************************************/    

function PDI_NDI_DIFF(){

    xPDI = pdi(10,12);
    xNDI = ndi(10,12);

    return xPDI.getValue(0)-xNDI.getValue(0);
} 

wayne

Hi Wayne,

Figured it was a slip, thanks for posting the followup code.