Using a variable in the screener ?

• 05/07/2019 at 10:05 AM #97826
  bewoke2

  Hello Folks !

  Is it possible to use a variable in a screener ? let say for example I want to find gappers, my code will be something like:

  myGap = close[1]/open[0] if myGap > X then myResult = 1 else myResult = 0 endif screener(myResult)

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  myGap = close[1]/open[0]   if myGap > X then myResult = 1 else myResult = 0 endif   screener(myResult)

   

  So when I launch my screener, I may use X as input (X = 1.1 for example for a gap of 10%), is this kind of manoeuvre possible with PRT ?
  Thanks !

  

  bewoke2

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  05/07/2019 at 10:59 AM #97829
  robertogozzi

  Yes.

  Replace last line with:

  screener[myResult]

  1	screener[myResult]

   

  

  robertogozzi

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  05/07/2019 at 11:26 AM #97833
  Vonasi

  bewoke2– Please always use the ‘Insert PRT Code’ button when posting any code as it makes it far more readable for everyone else. I have tidied up your post for you 🙂

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  bewoke2

  

  Vonasi

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  05/08/2019 at 12:26 PM #97933
  bewoke2

  It didn’t do quite as I want ! I think I wasn’t clear enough.
  Here is how “exactly” my code will like.

  myRSI = 0 if Rsi[14](close) > X then myRSI = 1 else myRSI = 0 endif SCREENER(myRSI)

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  myRSI = 0   if Rsi[14](close) > X then myRSI = 1 else myRSI = 0 endif   SCREENER(myRSI)

  So when I run the scanner, I should be able to input the variable “X” (65, 70, or 80…), it’s like having a global scanner for an RSI above a certain value.
  It is like making a function in C code which takes an input from the user before displaying the result.

  But now, I get “X” is not defined (which is true)

  Thanks!

  

  bewoke2

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  05/08/2019 at 1:40 PM #97951
  Vonasi

  It is not possible to have externally adjustable variables in a screener. You will need to manually modify the screener to change the value or set up multiple screeners one for each chosen value.

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  bewoke2

  

  Vonasi

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  05/08/2019 at 1:41 PM #97952
  robertogozzi

  First, replace the last line with:

  screener[myResult]

  1	screener[myResult]

  Then you will have to hard code X inside the code; screeners and strategies do not allow users to change data (only indicators can).

   

   

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  bewoke2

  

  robertogozzi

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  05/08/2019 at 2:04 PM #97959
  bewoke2

  Thanks ! resolved.

  

  bewoke2

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