Indicator with Hull MA: how to resolve errors

• 10/30/2019 at 12:29 AM #111600
  Analyst

  Hi

  I am trying to build an indicator with the Hull moving average. There have been similar questions with no comprehensive answer, so I am posting a bit more detail in the hopes of being able to resolve this. It would appear to be an issue within PRT, but the cause of the issue is not yet resolved.

  When I program the following code:

  Hull moving average

  a=average[20,8](close) return a

  1 2	a=average[20,8](close) return a

  I get the following error: Error in the indicator: MyIndicator. Define the type of moving average.

  But the type is defined as (8) which applies to the Hull MA. If one adds a variable (type, MA, Hull) PRT assigns a variable value of 8 but still returns the error when trying to display the indicator.

  As an additional comment: if I try to use the simplified creation of code in ProBackTest, and I select the Hull moving average off my chart, the created code is for a simple moving average and not the Hull moving average, so it appears (at least for some users) that the Hull moving average is not functional and cannot be used directly in any of the PRT modules.

  Any help would be happily accepted.

  

  Analyst

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  10/30/2019 at 12:48 AM #111603
  Vonasi

  Analyst – Please do not double post You asked a similar question in your first ever post to these forums. Double posting just leads to wasted time and confusion for those trying to help you.

  

  Vonasi

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  10/30/2019 at 12:56 AM #111604
  Vonasi

  The Hull average is average type 8 on v11 but not on v10.3 as v10.3 only has average types 0  to 6. Default for any other value is SMA.

  If you want the Hull average in v10.3 then just add this code as an indicator.

  Period = 20 // or whatever period you want HullAverage = WeightedAverage[ROUND(SQRT(close))](2 * WeightedAverage[ROUND(Period / 2)](close) - WeightedAverage[Period](close)) return HullAverage

  1 2 3 4 5

  Period = 20 // or whatever period you want   HullAverage = WeightedAverage[ROUND(SQRT(close))](2 * WeightedAverage[ROUND(Period / 2)](close) - WeightedAverage[Period](close))   return HullAverage

   

   

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  Analyst

  

  Vonasi

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  10/30/2019 at 8:36 AM #111609
  Analyst

  Thank you. It works now with a slight modification:

  Period = 20 // or whatever period you want HullAverage = WeightedAverage[ROUND(SQRT(Period))](2 * WeightedAverage[ROUND(Period / 2)](close) - WeightedAverage[Period](close)) return HullAverage

  1 2 3 4 5

  Period = 20 // or whatever period you want   HullAverage = WeightedAverage[ROUND(SQRT(Period))](2 * WeightedAverage[ROUND(Period / 2)](close) - WeightedAverage[Period](close))   return HullAverage

  The first ‘close’ should be ‘Period’.

  

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  10/30/2019 at 9:11 AM #111611
  Vonasi

  I didn’t test it – I just cut and paste it from elsewhere after doing a search using the search box for ‘Hull average’. It must be wrong in the post I got it from.

  Most questions such as yours have been asked before so the search box is always a good starting point to find an answer before creating a new topic.

   

  

  Vonasi

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  10/30/2019 at 10:49 AM #111635
  Analyst

  Thank you and agreed. I had done a search and found the code. The original question was trying to find out why the direct application was not working, and I had not found the answer as you explained with regards to not being implemented in 10.3. Because when one starts, it appears it is implemented. If you go to the variables window and set a variable, PRT allows you to set for Hull at 8, but then produces the error. But great to hear it will be in v11.

  

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  10/30/2019 at 2:02 PM #111667
  Nicolas

  “HullAverage” is now a reserved keyword in version 11, to get the Hull Moving Average value of the defined period, see HullAverage instruction in our documentation.

  

  Nicolas

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