Request: Ehlers Deycler (from TradingView)

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  • Author
    Posts
  • 07/07/2024 at 7:35 PM #234906 quote
    Trianenn
    Participant
    New

    Hello,

    I’m trying to convert this Ehlers Deycler indicator from TradingView but I can’t seem to get it work.

    Here is my code:

    // Input parameters
length = 60
src = close

// Constants
once PI = 3.141592653589793

// Variables
PIx2Length = 2 * PI / length
cosValue = cos(PIx2Length)

alpha = 0
If (cosValue <> 0) then
   alpha = (cosValue + sin(PIx2Length) - 1) / cosValue
else
   If (barindex > 1) then
      alpha = alpha[1]
   endif
endif

decycler = alpha / 2 * (src + src[1]) + (1 - alpha) * decycler[1]

// Plotting the Decycler
return decycler AS "Decycler"

    I would appreciate if someone could point me to my mistake(s).

    07/08/2024 at 6:26 AM #234908 quote
    JS
    Participant
    Senior

    Ehlers Simple Decycler

    07/08/2024 at 6:28 AM #234909 quote
    Trianenn
    Participant
    New

    Thanks JS!

    Although the indicators share the same name, the calculation is not the exactly the same.

    07/08/2024 at 6:33 AM #234910 quote
    JS
    Participant
    Senior

    True, but all the Decyclers I’ve seen have a different calculation… 🙂

    It’s such a difficult subject that I can’t judge which calculation is the right one…

    07/08/2024 at 10:55 AM #234931 quote
    Iván González
    Moderator
    Master
    You only have to convert radians to degrees. 
    PIx2Length=2*PI/length
transf = PIx2Length*360/(2*PI)
cosine=COS(transf)
    PRT works with degrees and TV works with radians. Here you have the code: 
    //-----Inputs------------------------------------//
length=60
src=close
colorMA=1
//-----------------------------------------------//
//-----Moving average calculation----------------//
once PI = 3.14159265359

if barindex > length then

PIx2Length=2*PI/length
transf = PIx2Length*360/(2*PI)

cosine=COS(transf)
alpha=0

if cosine<>0 then
alpha=(cosine+sin(transf)-1)/cosine
else
alpha=alpha[1]
endif

MA=0
MA=alpha/2*(src+src[1])+(1-alpha)*MA[1]
//-----------------------------------------------//
//-----Color MA configuration--------------------//
if colorMA then
if MA>MA[1] then
r=0
g=255
elsif MA<MA[1] then
r=255
g=0
endif
endif
endif

return MA as "Decycler" coloured(r,g,0)style(line,2)
    Trianenn and JS thanked this post
    07/08/2024 at 11:48 AM #234938 quote
    Trianenn
    Participant
    New
    Perfect! Thanks Iván
    JS thanked this post
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Request: Ehlers Deycler (from TradingView)


ProBuilder: Indicators & Custom Tools

New Reply
Author
author-avatar
Trianenn @trianenn Participant
Summary

This topic contains 5 replies,
has 3 voices, and was last updated by Trianenn
1 year, 7 months ago.

Topic Details
Forum: ProBuilder: Indicators & Custom Tools
Language: English
Started: 07/07/2024
Status: Active
Attachments: No files
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