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Date/Time: Mon, 28 Oct 2024 08:57:43 +0000

[Programming Help] - ASCIL: 'optional' Index parameter; sc.AutoLoop

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[2024-10-02 02:09:51] #1 [Go To First Post]
User379249 - Posts: 5
Hi, Trying to make a custom Correlation study and using scsf_CorrelationCoefficient as paradigm. That study calls function GetCorrelationCoefficient as found in SCStudyFunctions. I created a similar function to do Kendall Tau correlation through much cut and paste. My scsf_KendallTauCoefficient calls my GetKendallTauCoefficient but my code does not compile ("..too few arguments to function.."). My reading clearly indicates its related to the optional 'int Index' parameter and the sc.AutoLoop = 1 setting. Perhaps I am not enabled to compile such autolooping functions which allow for the use of the Index in the function code block despite not passing the Index in. Flummoxed. I am attaching my .cpp file. (I have function and study in one file) Thanks in advance for your help.
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post to SC Support.txt - Attached On 2024-10-02 02:09:05 UTC - Size: 2.74 KB - 62 views

[2024-10-02 08:43:05] #2 [Go To First Post]
User431178 - Posts: 522
You need to pass in the index parameter, you cannot omit function parameters (unless they are declared with a default value in your declaration/signature). GetKendallTauCorrelationCoefficient(Array1, Array2, sc.Index, Input_Length.GetInt()); The "indexless" version of scsf_CorrelationCoefficient is an overload with a different signature, it has no index parameter, but instead uses the sc.Index member variable directly. Take a look in file "sierrachart.h" and you will see what is happening.
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[2024-10-02 12:46:55] #3 [Go To First Post]
User379249 - Posts: 5
Hi, Thanks for the rapid feedback. It's really appreciated. The clarification is appreciated. I knew something was clearly wrong but was not sure exactly given the AutoLoop condition. To be clear, I will pass in the Index parameter. I am not sure how this looks exactly as I am just trying to emulate the CorrelationCoefficient code which does not pass that in. Also, if I am passing in the variable is the sc.AutoLoop=1 statement still correct and necessary? I did add the parameter as "(..... , sc.Index, ...)" and kept sc.AutoLoop=1 and the study appears to work just fine. Happy to close this ticket but also happy to receive any comment you might have. Paul
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