Using efs() to call external efs studies

[WilliamV]

This is the parameters for efs():
myVar = efs( "myCustomEFS.efs", 0, sym( "IBM,15" ), 20, 5 );

I'm having an error return: Formula file not found. Do I have to include the entire path to the efs in parantheses?("C:\Program Files\eSignal\Formulas\Downloads\myCustomEFS.efs")

And what is the correct syntax if I do not want to specify a symbol and interval and don't want to override any of myCustomEFS.efs parameters?

efs("C:\Program Files\eSignal\Formulas\Downloads\mycustom.efs", 0, 0, 0, 0);

[ACM]

WilliamV
If the efs you are calling is in a different folder then you need to add the path which in your example would be "/Downloads/myCustomEFS.efs"
As to the parameters you can simply omit them. The enclosed example will use the efs() function to call the customStoch study that is in the EFS 2 Custom folder
Alex

function preMain() {
    setPriceStudy(false);
    setStudyTitle("Stochastic");
    setCursorLabelName("%K",0);
    setCursorLabelName("%D",1);
    setDefaultBarFgColor(Color.blue, 0);
    setDefaultBarFgColor(Color.red, 1);
    setPlotType(PLOTTYPE_LINE,0);
    setPlotType(PLOTTYPE_LINE,1);
    setDefaultBarThickness(1,0);
    setDefaultBarThickness(1,1);
}

function main() {

    var K = efs("/EFS 2 Custom/customStoch.efs",0);
    var D = efs("/EFS 2 Custom/customStoch.efs",1);

    return new Array (K,D);
} 

[WilliamV]

That worked! Thank you.

Where does the efs have to be in order not to have to add additional path?

[ACM]

WilliamV
In the same folder of the called efs in which case you would just use efs("myCustomEFS.efs", <series index>, etc);
Alex

[WilliamV]

That certainly is a great capability addition to Esignal. As is the diffrent time intervals.

Now if I could only add and most importantly write the correct entry and stop parameters

[WilliamV]

I want to plot the difference between two moving averages that will be called bia efs(), but it's not returning a value.

Here is the script:

function preMain() {
setPriceStudy(false);
setColorPriceBars(true);
setDefaultPriceBarColor(Color.black);
}

function main() {
if((MA1 == null) || (MA2 == null)) return;
var MA1= efs("/Downloads/MA1.efs")
var MA2= efs("/Downloads/MA2.efs")


return (MA2-MA1);
}

What am I missing?

[ACM]

WilliamV
Try the enclosed revision
Alex

function preMain() {
    setPriceStudy(false);
    setColorPriceBars(true);
    setDefaultPriceBarColor(Color.black);
}

function main() {
    //if((MA1 == null)  || (MA2 == null)) return; //removed
    var MA1= efs("/Downloads/MA1.efs",0);//added series index
    var MA2= efs("/Downloads/MA2.efs",0)//as above
    
    
    return (MA2-MA1);
} 

[WilliamV]

With a little digging and a little help the EFS2 language is making more sense.

Can't express how valuable your help is to me. Thank you Alex.

[ACM]

WilliamV
Glad to hear that and you are most welcome
Alex