Conversion of Pine Script OBV OSC 0.1

DavidMClarke1974 · 2021-09-14T11:17:50+00:00

High guys. I am in the process of converting from Tradingview to Prorealtime but want to bring my strategy with me. Unfortunately however, Prorealtime does not have the indicators i use so i need to convert them. How do i go about doing that? Are there any conversion notes/articles i can read that will help me convert things like – “obv(src) => cum(change(src) > 0 ? volume : change (src) < 0 ? -volume : 0*volume)”. Creating the variables such as src and volume is straight forward, it’s the other bits i’m having issues with. Any help would be greatly appreciated. I would be happy to code it myself if there is any helpful guidance. Thanks in advance

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09/14/2021 at 12:17 PM #177548 quote

DavidMClarke1974
Participant

New

High guys.

I am in the process of converting from Tradingview to Prorealtime but want to bring my strategy with me. Unfortunately however, Prorealtime does not have the indicators i use so i need to convert them. How do i go about doing that? Are there any conversion notes/articles i can read that will help me convert things like – “obv(src) => cum(change(src) > 0 ? volume : change (src) < 0 ? -volume : 0*volume)”. Creating the variables such as src and volume is straight forward, it’s the other bits i’m having issues with.

Any help would be greatly appreciated. I would be happy to code it myself if there is any helpful guidance.

Thanks in advance

OBV-Oscillator.txt

09/14/2021 at 4:12 PM #177565 quote
robertogozzi
Moderator

Legend
There you go:
```
Periods = 20
MyOBV   = OBV(close)
Sma     = Average[Periods,0](MyOBV)
Diff    = MyOBV - Sma
RETURN Diff AS "Difference"
```
On-Balance-Volume-Oscillator.jpg
09/14/2021 at 4:32 PM #177572 quote

DavidMClarke1974
Participant

New

Thanks Roberto.

It looks like the conversion has been simplified as it doesn’t produce the same output as the original.

I have attached a screen shot of the original in the hope that it helps.

Thanks again for your assistance.

OBV-1.jpg

09/15/2021 at 8:47 AM #177592 quote
robertogozzi
Moderator

Legend
I needed to see screenshots and as you had not posted any link I found this one OBV Oscillator

I see some code was appended at a later moment. Can you provide a link to that code and pic, so that I can find details about its purpose?

There you go:
```
// OBV Oscillator2
//
// On Balance Volume Oscillator
//
// https://www.tradingview.com/script/Ox9gyUFA-Indicator-OBV-Oscillator/
// https://www.prorealcode.com/topic/conversion-of-pine-script-obv-osc-0-1/
//
// It makes easier to detect DIVERGENCES
//
// Periods  = 20
// Periods2 = 14
Periods     = max(1,min(999,Periods))
Periods2    = max(1,min(999,Periods2))
//
MyOBV       = OBV(close)
ma1         = 0
IF BarIndex > max(Periods,Periods2) THEN
   Sma        = Average[Periods,0](MyOBV)
   Diff       = MyOBV - Sma
   // --- added later:
   //    (https://www.prorealcode.com/topic/conversion-of-pine-script-obv-osc-0-1/#post-177572)
   Sma         = Average[Periods,0](MyOBV)
   Diff        = MyOBV - Sma
   //////////////////////////////////
   ONCE wmaPERC = 1 / Periods2
   ONCE maP = max(1,round(exp(0.5*log(Periods2))))
   //
   ma1   = (Diff * wmaPERC) + (ma1[1] * (1 - wmaPERC))     //Wilder Average 1
   //ma1 = ((ma1[1] * (Periods2 - 1)) + Diff) / Periods2   //Wilder Average 2
   //
   ma2 = average[maP,0](ma1)
   r = 255                          //Orange
   g = 100
   b = 10
   IF ma1 > ma2 THEN
      r = 20                        //Cyan
      g = 150
      b = 255
   ENDIF
   ma3 = ma1 * exp(0.15*log(Periods2))
   //DrawText("•",BarIndex,Ma3,Dialog,Bold,10) coloured(r,g,b,255)
   // --- end additional code
ENDIF
RETURN Diff AS "Difference",ma3 AS "ma3"
```
KumoNoJuzza thanked this post

On-Balance-Volume-Oscillator2.itf On-Balance-Volume-Oscillator-1.itf
09/16/2021 at 8:41 AM #177691 quote

DavidMClarke1974
Participant

New

Thanks Roberto

I’m going to have a play with this today.

Thanks again.
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