the STD function

• 10/23/2019 at 8:40 PM #110988
  assi

  Hi,

   

  I have easy question, I think…

  I’m use to work with this function with two parameters: period, price.

  I came across with few indicators that use “BarIndex”: STD[period](barindex)

  What can I learn from that? for example, if the period is 12 and the barindex is 234.

   

  thanks, assi

  

  assi

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  10/24/2019 at 12:16 AM #110998
  robertogozzi

  It will return the STD[12] of the 234th bar (233rd previous bar, being 0 the current one).

  

  robertogozzi

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  10/24/2019 at 8:01 AM #111022
  assi

  thank you for the explanation, I still don’t underspend what I learn from that.

  Do you mean that it’s return the STD for close at the first bar?

  

  assi

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  10/24/2019 at 8:17 AM #111025
  robertogozzi

  Yes, because BARINDEX is the number of bars elapsed, thus as an index it will bring you back to the first bar.

  

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  10/24/2019 at 8:19 AM #111026
  Nicolas

  Your syntax is incorrect, if you want to get the 12 periods Standard Deviation, 234 bars ago, the syntax must be:

  STD[period][offset]

  1	STD[period][offset]

  The offset period is always in brackets:

  STD[12][234]

  1	STD[12][234]

  And since BARINDEX is the bars quantity loaded since the start of the history, the offset is a difference between the current barindex and the candle you want to get the value from, not the real barindex number.

   

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  robertogozzi

  

  Nicolas

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  10/24/2019 at 1:02 PM #111058
  assi

  OK.

  I don’t know what the coder means in this syntax, I read the documentation and it’s only mention the period and price.

  So now i’m confuse because the code for the offset was written was not in [] but in (): STD[period](barindex).

  In this case, STD[12](barindex), what I will get and learn from that?

  

  assi

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  10/24/2019 at 1:19 PM #111061
  Nicolas

  Sorry, but the coder means nothing with that line, he is wrong. What is the purpose of getting the standard deviation of the bars numbers?!

  The order is: STD[period](applied price)[offset]

  If you don’t specify the applied price, it is considered as Close by default (like it is for almost indicators instructions).

  

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  10/24/2019 at 1:26 PM #111062
  assi

  Thank you for clarify that for me!!

  

  assi

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