Elliot Wave Help

[Walid]

Hi,

I am trying to write an EFS for the following I found on the net:

1. Elliot Wave oscillator (EWO)
Parameters: hasn't parameter.
Calculation:
EWO (i) = MVA((high + low) / 2, 5) - MVA((high + low) / 2, 35).

2. Elliot Wave trend (EWTREND)
Parameters: N - number of periods, TR - trigger.
Calculation:
EWTREND (i) = f (last(i), high(i), low(i), TR),
where f is logical expression,
high(i) = max (last(j)), low(i) = min (last(j)), j = [i - N, i],
last(j ) = MVA((high + low) / 2, 5) - MVA((high + low) / 2, 35).

3. Elliot Wave number (EWN)
Parame ters: N - number of periods, TR - trigger.
Calculation: EWN (i) = f (last(i), high(i), low(i), TR),
where f is logical expression,
high(i) = max (last(j)), low(i) = min (last(j)), j = [i - N, i],
last(j) = MVA((high + low) / 2, 5) - MVA((high + low) / 2, 35).

I can understand what number 1 is trying to do but not 2 or 3. I think the EWN is suppose to be 1 to 5 measuring where in the Elliot cycle we are. Can anyone please help?

Walid

[ACM]

Walid
With regards to your first request you don't necessarily need an efs for that. You can just use the Price Oscillator in Basic Studies and set that to lengths 5 and 35 and HL/2 as the Source.
However if you do want it as an efs then you can use the builtinOSc.efs that is in the Builtin subfolder of Formulas and set it as explained above.
Alex

[Walid]

Thanks for the info Alex. I just can't figure out the logic of EWN and EWTREND.

Walid

[chiropharm]

Alex,
Is there a modification of the BuiltinOsc that has an audio alert when the zero line is crossed?

Thanks,

Ed

[ACM]

Ed
Add the following lines of code in the main section of the builtinOsc.efs and it will trigger a sound alert if at the completion of a bar the oscillator has crossed 0.
Alex

if(getBarState()==BARSTATE_NEWBAR){
        if(vOsc.getValue(OscStudy.OSC,-2)<0&&vOsc.getValue(OscStudy.OSC,-1)>0||
           vOsc.getValue(OscStudy.OSC,-2)>0&&vOsc.getValue(OscStudy.OSC,-1)<0)
               Alert.playSound("ding.wav");
    } 

[chiropharm]

Thanks Alex

[soap3000]

modification

Hi Alex,

If you're after an audible alert if the bar completes above or below a certain value EG: above or below 0.03 then would you modify thus..???

if(getBarState()==BARSTATE_NEWBAR){
if(vOsc.getValue(OscStudy.OSC,-2)<0&&vOsc.getValue(OscStudy.OSC,-1)>0.03||
vOsc.getValue(OscStudy.OSC,-2)>0&&vOsc.getValue(OscStudy.OSC,-1)<0.03)
Alert.playSound("ding.wav");
}

also how do you get that alert pop up box to do pop up also?

Many Thanks

[ACM]

soap3000
Enclosed below is how you would need to write the condition to trigger both an audible and popup alert if either 0.03 or -0.03 values are crossed on a completed bar
Alex

PS. In the second condition I am assuming you want an alert if the oscillator crosses -0.03
Replace -0.03 with 0.03 if the latter is instead the threshold

if(getBarState()==BARSTATE_NEWBAR){
    if(vOsc.getValue(OscStudy.OSC,-2) < 0.03 && vOsc.getValue(OscStudy.OSC,-1) > 0.03 ||
       vOsc.getValue(OscStudy.OSC,-2) > -0.03 && vOsc.getValue(OscStudy.OSC,-1) < -0.03){
            Alert.playSound("ding.wav");
            Alert.addToList(getSymbol()+","+getInterval(),"Crossing threshold",Color.black,Color.red);
    }
} 

[soap3000]

Thanks - as ever, for your prompt and efficient response.

Please excuse my programing ignorance.... if I wanted to run the same sort of alert for another indicator - where do I find the code names for that indicator. Price Oscillator looks to be 'vOsc' what are the others?

In particular I am looking for the 'library name' for the ADX line.

Also...

Is it possible to have an alert trigger if two conditions are met ie:

Price Oscillator is +/- 0.03 whilst simultaneously ADX line is above 25 on completion of that bar...?

Thanks for taking the time.

[ACM]

soap3000
You are most welcome

if I wanted to run the same sort of alert for another indicator - where do I find the code names for that indicator. Price Oscillator looks to be 'vOsc' what are the others?

If you are using an existing formula then you will need to reference the names of the variables used in that script.
If instead you are asking for the names of the available functions then you can find these listed in the EFS KnowledgeBase under Function Reference-> Built-In Study Functions

In particular I am looking for the 'library name' for the ADX line

You can find the description and syntax for the ADX function(s) in this article in the EFS KnowledgeBase

Is it possible to have an alert trigger if two conditions are met ie:
Price Oscillator is 0.03 whilst simultaneously ADX line is above 25 on completion of that bar...?

You can include as many conditions as you wish to trigger an alert (or any other event). See the sample code enlosed below which will trigger an audible and popup alert when the Oscillator crosses above 0.03 and the ADX is above 25.
Note that the syntax is slightly different from the one used in the script posted earlier in this thread because in this case I am using the EFS2 functions instead of the EFS1 functions (which are still available by the way)
Alex

var xOsc = null;//declare the external variable
var xADX = null;//declare the external variable
 
function main(){
 
    if(xOsc==null) xOsc = osc(5,35,false);//initialize the Oscillator study
    if(xADX==null) xADX = adx(14,14);//initialize the ADX study
    
    if(xOsc.getValue(-2)==null||xADX.getValue(-2)==null) return;//null check on oldest value used
                                                                //in the conditions
    
    if(getBarState()==BARSTATE_NEWBAR){
        if(xOsc.getValue(-2)<0.03 && xOsc.getValue(-1)>0.03 && xADX.getValue(-1)>25){
            Alert.playSound("ding.wav");
            Alert.addToList(getSymbol()+" "+getInterval(),"Crossing above",Color.black,Color.lime);
        }
    }
    
    return xOsc.getValue(0);
}