TREMA didnt show correctly.

• 01/26/2024 at 8:37 PM #226922
  dipont

  I have been searching for a long time for the code of TREMA in various languages. I tried using the code in the library. TRSMA seems to work correctly, but TREMA didn’t. I am trying to obtain the SPX price during Regular Trading Hours (RTH) as displayed on SPTRD SP500 charts. In Pine Script, it was easy to extract the EMA from another ticker. Could someone provide a hint on how to correctly implement this?

  TREMA

  // TREMA // // Time Range Exponential Moving Average // DEFPARAM CalculateOnLastBars = 20000 Periods = 200 StartTime = 153000 EndTime = 220000 // Alpha = 2 / (Periods + 1) i = 0 TREMA = close FOR j = 0 TO 3000 IF opentime[j] >= StartTime AND opentime[j] <= EndTime THEN i = i + 1 TREMA = ((close[j] - TREMA) * Alpha) + TREMA IF i = Periods THEN BREAK ENDIF ENDIF NEXT IF TREMA = 0 THEN TREMA = close ENDIF Return TREMA AS "TREMA"

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  // TREMA // // Time Range Exponential Moving Average // DEFPARAM CalculateOnLastBars = 20000 Periods    = 200 StartTime  = 153000 EndTime    = 220000   // Alpha = 2 / (Periods + 1) i     = 0 TREMA = close FOR j = 0 TO 3000 IF opentime[j] >= StartTime AND opentime[j] <= EndTime THEN i = i + 1 TREMA = ((close[j] - TREMA) * Alpha) + TREMA IF i = Periods THEN BREAK ENDIF ENDIF NEXT IF TREMA = 0 THEN TREMA = close ENDIF Return TREMA AS "TREMA"

   

   

  

  dipont

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  01/27/2024 at 9:57 AM #226933
  robertogozzi

  Calculations are made accord to the time range you selected.

  What do you think is not working?

   

  

  robertogozzi

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  01/27/2024 at 7:38 PM #226965
  dipont

  Just as I have attached two photos, you can see the difference. Essentially, if the TREMA only reacts within the time range that I have chosen, it should not change outside of this time range, right?”

  

  dipont

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  01/30/2024 at 9:33 AM #227069
  Nicolas

  It changes because you set TREMA=close at line 13, even outside the desired time window.

  

  Nicolas

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  02/03/2024 at 8:31 PM #227365
  dipont

  thanks a lot. without this line looks better. BUT, the ema is still not right… Please check the screenshot. the price was rising but ema not.

  

  dipont

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  02/08/2024 at 5:42 PM #227675
  robertogozzi

  An 800-period EMA will take 800 of the selected bars within the desired time range to be aware of that rise.

   

   

  

  robertogozzi

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