Possible To Extend T3 Channel Lines?

[Diane P]

Hello,
With the T3 Channel, once it's on the chart, regardless of length(period) , I'm trying to have the lines extend further in the projected direction , perhaps by clicking on them. From the sound of it, I thought the addLineToolEXTENTED might work, but I can't figure out how to insert it into the T3 study. Would the addLine be appropriate, or do I need to do something else? Thanks.
Diane

[ACM]

Diane
I don't know which T3 efs you are referring so for the purpose of this example I will be using the customMA.efs which is in the EFS2 Custom folder
The first thing you want to do is create the two variables that you will use for the y1 and y2 parameters of LineTool.RAY. In doing so you also run a null check on the values.

var nMA_0 = xMA.getValue(0);//value of the MA at the current bar
var nMA_1 = xMA.getValue(-1);//value of the MA at the prior bar
if(nMA_1==null || nMA_0==null) return;//null check 

At that point you can insert the command for the line tool. You will need to preceed it with a clearLineTool() command else you will get an infinite number of lines drawn

clearLineTool(LineTool.RAY);//clear all the LineTool.RAY
addLineTool(LineTool.RAY,-1,nMA_1,0,nMA_0,1,Color.blue,"Ray");//add the LineTool.RAY 

The result is shown in the image enclosed below.
Apply the same logic to your study.
Alex

[Diane P]

Hi Alex,
Thanks for your prompt reply. For the purpose of learning how to do this, I'm going with the single line T3 Average. I tried to use the MA for guidance, but it is not working out. Can you please advise additional help? Thanks.
Diane

[ACM]

Diane
Since that script does not use built-in studies it is necessary to use a different solution to retrieve the value of the T3Average at the prior bar.
The first thing you need to do create two global variables and set them to null ie

var T3Average = null;
var T3Average_1 = null; 

Then in main insert the following section just before the line var T3Average = c1 * e6 + c2 * e5 + c3 * e4 + c4 * e3;

if(getBarState()==BARSTATE_NEWBAR){
        T3Average_1=T3Average;
    } 

At every new bar this will assign to the variable T3Average_1 the last computed value of T3Average thereby creating the historical value we need as one of the coordinates of the LineTool.
Then remove the var from var T3Average = c1 * e6 + c2 * e5 + c3 * e4 + c4 * e3; since we have already declared that variable as a global variable.
At this point in the line above the return statement insert the following section of code which is virtually the same I showed you in my prior reply.
Alex

if(T3Average==null||T3Average_1==null) return;
        
    clearLineTool(LineTool.RAY);
    addLineTool(LineTool.RAY,-1,T3Average_1,0,T3Average,1,Color.blue,"Ray"); 

[ACM]

Diane
As I already indicated to you in this message the version of the T3 you are using computes incorrectly in real time. In that same message I also showed you how to create historical values of a custom variable which is the same process I am using in the example in this thread. You may want to bookmark either thread for future reference if you need to create historical values of a custom variable.
Alex

[Diane P]

Good Morning, Alex,
Thank you so much for the corrected T3. It works beautifully! Now I will apply it to my channel, the development of which you so patiently guided me. It is, indeed, a great reference of how to set up historical value . Again, my sincerest thanks for all you do for us. Have a great weekend!
Diane