I want to return a value (variable) undefined before and after a given date

• 01/23/2023 at 4:08 PM #208002
  calpa02

  Hey there…

  Here’s a challenge for you:-) Or maybe there is a simple solution to this?

  I want to return a value (variable) which is undefined before and after a given date that i set my self. Basically, I want to set the start date of when the variable should start returning values and I want to set the end date of when the same variable should stop returning values.

  How can this be coded? Probably quite simple huu?

  Let me know

  

  calpa02

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  01/24/2023 at 10:13 AM #208048
  robertogozzi

  You can use UNDEFINED just for the first time, any subsequent assignement cannot be overwritten. So the solution is to reset the variable to 0, not to UNDEFINED:

  ONCE x = undefined IF (Time >= 100000) AND (Time <= 120000) THEN x = 1 ELSE x = 0 //undefined won't work here ENDIF RETURN x

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  ONCE x = undefined IF (Time >= 100000) AND (Time <= 120000) THEN    x = 1 ELSE    x = 0 //undefined won't work here ENDIF RETURN x

   

  

  robertogozzi

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  01/24/2023 at 11:21 AM #208068
  calpa02

  Thanks for your answer! That means that UNDEFINED is probably not the right way to achieve what I want to achieve. Maybe it’s not possible at all.

  I want to return a value from an indicator that I coded my self, but I don’t want any value to be returned before and after the STARTTIME and ENDTIME.

  If I return a “zero” the visualization in the chart get messed up and it returns the wrong values for other parameters.

  Maybe it’s not possible? What’s your thoughts?

  Thanks Patrik

  

  calpa02

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  01/24/2023 at 11:49 AM #208083
  robertogozzi

  This always plots the same variable, but makes it invisible outside the selected time interval:

  t = 0 x = close IF (Time >= 100000) AND (Time <= 110000) THEN t = 255 ENDIF DrawText("#x#",BarIndex,high + average[20,0](range)) coloured("Green",t) RETURN

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  t = 0 x = close IF  (Time >= 100000) AND (Time <= 110000) THEN    t = 255 ENDIF DrawText("#x#",BarIndex,high + average[20,0](range)) coloured("Green",t) RETURN

  

  robertogozzi

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  01/24/2023 at 11:55 AM #208085
  calpa02

  Wow… OK! 🙂

  But T can be dynamic right?

  /Pat

  

  calpa02

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  01/24/2023 at 12:12 PM #208095
  robertogozzi

  What do you mean by “DYNAMIC” ?

  

  robertogozzi

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  01/24/2023 at 1:05 PM #208104
  calpa02

  …well, basically “t” will be the result of a changing parameter calculation/indicator in my code. In your example it’s set to t=255, but I guess that “t” can represent any given result/value from another calculation/indicator.

  Right?

  /Pat

  

  calpa02

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  01/24/2023 at 7:14 PM #208149
  robertogozzi

  t is just the Alpha, or Transparency, attribute to be used with colours to make them fully visible or not, it can range from 0 to 255, 255=fully visible and 0=invisible  (an example about COLOURED at https://www.prorealcode.com/documentation/drawarrow/.

  

  robertogozzi

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