create EFS to hold variables

[maninjapan]

I am using a number of custom indicators that share a group of variables. I need to update these variables about once a month.
I would like to try and streamline this process. Is it possible to create an EFS specifically to hold the variables from which all the other indicators read?

That way I would only have to update the indicators once in one place.

Thanks in advance

[ACM]

Re: create EFS to hold variables

maninjapan
While you can do that with an efs - using global values for example - a more practical [and easier] solution is to create a simple function in a Function Library file that just returns an array of all the values [strings, numbers, booleans, etc] that you want to store and then call that function through the addLibrary() function
That said I think a more appropriate way to do it is to use a text file which you place in the FormulaOutput folder and then read using the EFS File Object.
If you search the forum you should find various examples of all the above uses
Alex

Originally posted by maninjapan
I am using a number of custom indicators that share a group of variables. I need to update these variables about once a month.
I would like to try and streamline this process. Is it possible to create an EFS specifically to hold the variables from which all the other indicators read?

That way I would only have to update the indicators once in one place.

Thanks in advance

[maninjapan]

I have attempted to work with an efsLib. I think I am quite close, however I am having the following issue with the efsLib posted at the bottom.

I am using the efsLib only to hold variables to be used across multiple EFS's. It worked momentarily when testing with the first 3 functions, however when adding more functions relating to a second EFS, it started returning a syntax error
' failed to call 'ENERGY.BRN': function not defined. It only stopped working after adding extra functions to hold variables.
Apart from that I didnt change anything.
The library file is saved in the correct place. and as far as I can see the function is defined....

Any suggestions?

I pieced together the library file from examples on the forum, so not even sure I have written it correctly.

    var BRENT = "BRN 2G-ICE";
    var CL = "CL G2";
    var HO = "HO G2";
    var XRB = "XRB G2",




    var binit = false;
    
    
function BRN() {
    if (binit== false){
    return BRENT; 
    }
}

function CRUDE() {
    if (binit== false){
    return CL; 
    }
}

function HEAT() {
    if (binit== false){
    return HO; 
    }
}

function GASOLINE() {
    if (binit== false){
    return XRB; 
    }
} 

and here is an excerpt of the EFS calling the library

var ENERGY = addLibrary("ENERGY.efsLib");  
function preMain() {
  

    setPriceStudy(false);
    setStudyTitle("BRNdiff");
    setCursorLabelName("BRN", 0);
    setCursorLabelName("TCM", 1);
    setDefaultBarStyle(PS_SOLID, 0);
    setDefaultBarStyle(PS_SOLID, 1);
    setDefaultBarFgColor(Color.red, 0);
    setDefaultBarFgColor(Color.blue, 1);
    setDefaultBarThickness(2, 0);
    setDefaultBarThickness(1, 1);
    setPlotType(PLOTTYPE_LINE, 0);
    setPlotType(PLOTTYPE_LINE, 1);


}


var bInit = false;
var xClose = null; 
var brn_sym = ENERGY.BRN();
var yen_sym = "6J H2";
var TCM_sym = "TCL K2-TCM";
var TCM_sym_day = "TCL K2-TCM=2";

function main() {
  
if (getHour(0,sym(brn_sym)) == 15 && getMinute(0,sym(brn_sym)) == 30-getInterval(0,sym(brn_sym))) { // Is your 3.30pm-inv bar
nCloseDay0=close(0,sym(brn_sym));

} 

[ACM]

maninjapan
The reason you are getting an error is that you have a comma instead of a semicolon in the following line of the function library
var XRB = "XRB G2",
and you are missing a closing curly bracket in the efs.
Once you correct these your library and calling script will work.
That said you do not need a bInit routine in each of those functions of the library. Just call the function one time only from the efs [as you are in effect already doing]
Furthermore you could condense everything into one function that returns an array of all the symbols which you then call in your script as shown in the basic example enclosed below (note the example was created as a single script just to illustrate the concept and doing it in a function library would be no different other than having to call the library)
Alex

Originally posted by maninjapan
I have attempted to work with an efsLib. I think I am quite close, however I am having the following issue with the efsLib posted at the bottom.

I am using the efsLib only to hold variables to be used across multiple EFS's. It worked momentarily when testing with the first 3 functions, however when adding more functions relating to a second EFS, it started returning a syntax error
' failed to call 'ENERGY.BRN': function not defined. It only stopped working after adding extra functions to hold variables.
Apart from that I didnt change anything.
The library file is saved in the correct place. and as far as I can see the function is defined....

Any suggestions?

I pieced together the library file from examples on the forum, so not even sure I have written it correctly.

    var BRENT = "BRN 2G-ICE";
    var CL = "CL G2";
    var HO = "HO G2";
    var XRB = "XRB G2",




    var binit = false;
    
    
function BRN() {
    if (binit== false){
    return BRENT; 
    }
}

function CRUDE() {
    if (binit== false){
    return CL; 
    }
}

function HEAT() {
    if (binit== false){
    return HO; 
    }
}

function GASOLINE() {
    if (binit== false){
    return XRB; 
    }
} 

and here is an excerpt of the EFS calling the library

var ENERGY = addLibrary("ENERGY.efsLib");  
function preMain() {
  

    setPriceStudy(false);
    setStudyTitle("BRNdiff");
    setCursorLabelName("BRN", 0);
    setCursorLabelName("TCM", 1);
    setDefaultBarStyle(PS_SOLID, 0);
    setDefaultBarStyle(PS_SOLID, 1);
    setDefaultBarFgColor(Color.red, 0);
    setDefaultBarFgColor(Color.blue, 1);
    setDefaultBarThickness(2, 0);
    setDefaultBarThickness(1, 1);
    setPlotType(PLOTTYPE_LINE, 0);
    setPlotType(PLOTTYPE_LINE, 1);


}


var bInit = false;
var xClose = null; 
var brn_sym = ENERGY.BRN();
var yen_sym = "6J H2";
var TCM_sym = "TCL K2-TCM";
var TCM_sym_day = "TCL K2-TCM=2";

function main() {
  
if (getHour(0,sym(brn_sym)) == 15 && getMinute(0,sym(brn_sym)) == 30-getInterval(0,sym(brn_sym))) { // Is your 3.30pm-inv bar
nCloseDay0=close(0,sym(brn_sym));

} 

[maninjapan]

that simple....... Thanks Alexis, works perfectly now and have been able to clean it up. I'm not sure how the file object would have worked out, but from what I looked at, this method seemed to be a lot easier to implement for a beginner like myself.


Thanks Again!!

[ACM]

maninjapan
You are welcome
Alex

Originally posted by maninjapan
that simple....... Thanks Alexis, works perfectly now and have been able to clean it up. I'm not sure how the file object would have worked out, but from what I looked at, this method seemed to be a lot easier to implement for a beginner like myself.


Thanks Again!!