Modifying Lines and Labels efs

[ecmeyer]

Could someone offer suggestions on how to modify the attached efs so that it can show lines and labels with the Opening Price and various offsets that can be edited under "Study Properties"?
e.g. S&P emini Open 1493.75
Lines & Labels at Open + 2, Open + 4, Open - 1.5, Open - 3.
Any help would be greatly appreciated.

Eric

[ACM]

Eric
I would suggest using Todays Open.efs [which is in the OHLC folder of Formulas] rather than LinesLabels.efs as it is considerably easier to adapt to what you are trying to accomplish.
Here below is the main function of that efs modified in the simplest possible way to plot the Open and two lines at user defined point offsets. By default these are set at Open+2 and Open-1.5 but can be modified through Edit Studies. The result of this modification is shown in the screenshot enclosed below

function main(Offset1, Offset2) {//add the parameter names in the main definition
 
    if(isMonthly() || isWeekly() || isDaily())
    return;
    
    if(Offset1==null) Offset1 = 2; else Offset1 = Offset1;//initialize the parameters and set default
    if(Offset2==null) Offset2 = -1.5; else Offset2 = Offset2;//initialize the parameters and set default
    
    if(bInit == false){
        xOpen  = open(inv("D"));
        bInit = true;
    }
    
    var vOpen  = xOpen.getValue(0);//replaced the series with the value (see Note1 below)
    var Line1  = xOpen.getValue(0)+(Offset1);//see Note2 below
    var Line2  = xOpen.getValue(0)+(Offset2);
    
    return new Array (vOpen, Line1, Line2);//modified return statement to return an array
}
//Note1: Because the value of the Open does not change during the day it actually is not necessary 
//       to return the series as no constant synchronization of the plot is required
//Note2: These lines are written like this so that the user defined price offset can be a positive 
//       or negative number 

Using the above as an example you should be able to easily add other lines at the desired offsets.
Once you have completed that and you have verified that all the lines are plotting at the appropriate levels then add the required statements in preMain to assign the Cursor Label names, colors, types and thickness of the plots. Use the existing one as an example.
If you encounter any problems post the efs as you have written it and I or someone else can assist you in fixing it.
Alex

[ecmeyer]

Alex,

Thanks for the detailed reply.
I've added extra lines to the script but I can't get the lines to appear for the current trading day.
Any idea as to where the problem may be ???

Eric

[ACM]

Eric
Your script appears to be working at my end (see enclosed screenshot)
Alex

[ecmeyer]

Hello Alex,

I would like the script to show lines for the current trading day only. I have no idea how to go about it though.

Eric

[ACM]

Eric
See the solution provided in this thread
Alex

[ecmeyer]

Alex,

Many thanks - I really appreciate the support !!!

Eric

[ACM]

Eric
You are most welcome
Alex