Syntax Explanation Please

• 04/09/2017 at 11:33 PM #31546
  Geester

  Hello There,

  In some code I have been studying, it has the following line:

  body=close-open

  Later in the code, it then refers to:

  body[2]<0

  How has the “body” variable suddenly become an array-like indexable variable? The code in question comes from the following:

  https://www.prorealcode.com/prorealtime-indicators/candlesticks-patterns-indicator/

  I’m new to PRT and its code so excuse the newbie questions! 🙂

  Many thanks.

   

   

  

  Geester

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  04/10/2017 at 12:03 AM #31547
  robertogozzi

  It’s not an array, PRT doesn’t have them.

  It means the value of the expression identified by BIDY, 2 bars ago. It’s like writing:

  (close[2] - open[2]) < 0

  1	(close[2] - open[2]) < 0

   

  

  robertogozzi

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  04/10/2017 at 4:28 PM #31638
  Geester

  Hi Roberto,

  body=close-open

  PRT doesn’t just assign the result of the above to “body”, it actually “remembers” the expression for further access via the bar count indexer?

  Wow. That’s neat 🙂

  Cheers.

  

  Geester

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  04/10/2017 at 5:38 PM #31644
  robertogozzi

  Yes, and you can use that feature in as many ways as you may need; if you need, for instance, to have

  RSI[14] > 50

  1	RSI[14]  > 50

  now and the previous bar you may write:

  RsiValue = RSI[14](close) Condition = RsiVallue > 50 If Condition AND Condition[1] THEN . . . ENDIF

  1 2 3 4 5 6 7

  RsiValue = RSI[14](close) Condition = RsiVallue > 50 If Condition AND Condition[1] THEN     .     .     . ENDIF

   

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  robertogozzi

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  04/10/2017 at 5:44 PM #31646
  Geester

  Thank you, Roberto! I feel a little more confident now, given your explanation! 🙂

  Cheers.

  

  Geester

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