How to add or subtract an indicator value from itself

• 03/21/2018 at 7:34 AM #65925
  maximus78

  Good morning to everybody, I need a little help to understand the algorithm construction process in probuilder of the following indicators examples.

  How to subtract or add to an indicator value, the value of the previous period (yesterday’s indicator value).

  For example the PVT:

  %var = (close – yesterday’s close) / (yesterday’s close)

  PVT = %var * today’s volume + yesterday’s PVT

  Or the Williams acc/distr.

  TRH = the highest of (yesterday’s close or today’s high)

  TRL = the smallest of (yesterday’s close or today’s low)

  If the today’s close > yesterday’s close then A/D = today’s close – TRL

  if the today’s close < the yesterday’s close then A/D = today’s close – TRH

  If the today’s close = yesterday’s close then A/D = 0

  A/D William = today’s A/D + yesterday’s A/D William

  Thanks so much

   

  Max

   

  

  maximus78

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  03/21/2018 at 10:40 AM #65951
  robertogozzi

  For example the PVT:

       %var = (close – yesterday’s close) / (yesterday’s close)                                       //—>        VarPercent = (close – close[1]) / close[1]

       PVT = %var * today’s volume + yesterday’s PVT                                              //—>        Pvt = VarPercent * Vol + Pvt[1]

  Or the Williams acc/distr.

  TRH = the highest of (yesterday’s close or today’s high)                                     //—>        Trh = Max(close[1], high)

  TRL = the smallest of (yesterday’s close or today’s low)                                     //—>         Trl = Min(close[1],low)

  If the today’s close > yesterday’s close then A/D = today’s close – TRL          //—>         if close > close[1] then AD = close  – Trl

  if the today’s close < the yesterday’s close then A/D = today’s close – TRH  //—>          if close < close[1] then AD = close – Trh

  If the today’s close = yesterday’s close then A/D = 0                                          //—>          if close = close[1] then AD = 0

  A/D William = today’s A/D + yesterday’s A/D William                              //—>          AD = AD + AD[1]

  

  robertogozzi

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  03/21/2018 at 10:22 PM #66025
  maximus78

  Thanks Roberto, yes the PVT works, but the Williams AD doesn’t.

  I tried but it doesn’t give me any result, could you check please, maybe I’m making some mistakes.

  Thanks a lot, Max

  Trh = Max(close[1], high) Trl = Min(close[1],low) if close > close[1] then AD = close - Trl elsif close < close[1] then AD = close - Trh elsif close = close[1] then AD = 0 endif AD = AD + AD[1] return AD

  1 2 3 4 5 6 7 8 9 10 11 12

  Trh = Max(close[1], high) Trl = Min(close[1],low) if close > close[1] then AD = close  - Trl elsif close < close[1] then AD = close - Trh elsif close = close[1] then AD = 0 endif AD = AD + AD[1]   return AD

   

  

  maximus78

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  03/22/2018 at 1:26 AM #66034
  robertogozzi

  I do not know what lines 4, 6 and 8 do, so I can not tell you if they are good or not. I told you the syntax to do it, but what’s behind the A / D William just do not know!

  (translated from Italian to English by Nicolas).

  

  robertogozzi

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  03/25/2018 at 5:54 PM #66367
  maximus78

  Hi Roberto, I have resolved it….

  I have replaced line 10 :

  AD = AD + AD[1]

  with

  WAD = CUMSUM (AD)

  cumulative instruction “cumsum” in the end of the formula.

  Max

  

  maximus78

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