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PCF To Return True/False For Slope of Regression Line Rate this Topic:
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shawnpwilson
Posted : Monday, October 22, 2012 9:42:06 PM
Gold Customer Gold Customer

Joined: 9/29/2012
Posts: 13

Hi.  There is a drawing tool to draw on a chart a regression line for some period of length.  I am wondering if there is a way to create a PCF that returns TRUE if the slope of a regression line between today and 30 days ago is positive and FALSE if the slope of a regression line between today and 30 days ago is 0 or negative.  Thank you.

shawnpwilson
Posted : Monday, October 22, 2012 11:29:40 PM
Gold Customer Gold Customer

Joined: 9/29/2012
Posts: 13

Think I answered my own question...

Does TC2000 have a builtin function?  That's alot of work to create that.  God forbid if I want to do an entire year or 2. :)

 

(
(
30 *
(

 30 * c +
 29 * c1 +
 28 * c2 +
 27 * c3 +
 26 * c4 +
 25 * c5 +
 24 * c6 +
 23 * c7 +
 22 * c8 +
 21 * c9 +
 20 * c10 +
 19 * c11 +
 18 * c12 +
 17 * c13 +
 16 * c14 +
 15 * c15 +
 14 * c16 +
 13 * c17 +
 12 * c18 +
 11 * c19 +
 10 * c20 +
 9 * c21 +
 8 * c22 +
 7 * c23 +
 6 * c24 +
 5 * c25 +
 4 * c26 +
 3 * c27 +
 2 * c28 +
 1 * c29
  )

  -
  ( (465 * ( c   + c1  + c2  + c3  + c4  + c5  + c6  + c7  + c8  + c9 +  c10 + c11 + c12 + c13 + c14 + c15 + c16 + c17 + c18 + c19 +   c20 + c21 + c22 + c23 + c24 + c25 + c26 + c27 + c28 + c29 )  )  )
)
/

67425
)

> 0

Bruce_L
Posted : Tuesday, October 23, 2012 8:15:33 AM


Worden Trainer

Joined: 10/7/2004
Posts: 65,138

Linear Regressions and their slopes are not built into the Personal Criteria Formula Language.

PCF Formula Descriptions

That said, it is possible to create a formula which is quite a bit shorter than the one you have proposed which will produce the same results.

Using Linear Regression vs Classical Peaks/Valleys for Divergence Analysis

29 * (C - C29) + 27 * (C1 - C28) + 25 * (C2 - C27) + 23 * (C3 - C26) + 21 * (C4 - C25) + 19 * (C5 - C24) + 17 * (C6 - C23) + 15 * (C7 - C22) + 13 * (C8 - C21) + 11 * (C9 - C20) + 9 * (C10 - C19) + 7 * (C11 - C18) + 5 * (C12 - C17) + 3 * (C13 - C16) + C14 > C15



-Bruce
Personal Criteria Formulas
TC2000 Support Articles
shawnpwilson
Posted : Tuesday, October 23, 2012 10:16:23 PM
Gold Customer Gold Customer

Joined: 9/29/2012
Posts: 13

Thank you for the references, Bruce.

Bruce_L
Posted : Tuesday, October 23, 2012 10:28:45 PM


Worden Trainer

Joined: 10/7/2004
Posts: 65,138

You're welcome.



-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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