R help - Feb 2024 - help - Package: stats - function ar.ols

Hello,

My name is Pedro and it is nice to meet you all. I am having trouble
understanding a message that I receive when use function ar.ols from
package stats, it says that "Warning message:
In ar.ols(x = dtb[2:6966, ], demean = FALSE, intercept = TRUE,
prewhite = TRUE) :
  model order:  2 singularities in the computation of the projection
matrix results are only valid up to model order 1, which I do not know
what it means, if someone could clarify it, I would really appreciate
it.

Attached to this email you will find my code and data I used to run
this formula.

Thanks in advance.

Best regards,  Pedro.

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?s 16:34 de 22/02/2024, Pedro Gavronski. escreveu:
> Hello,
> 
> My name is Pedro and it is nice to meet you all. I am having trouble
> understanding a message that I receive when use function ar.ols from
> package stats, it says that "Warning message:
> In ar.ols(x = dtb[2:6966, ], demean = FALSE, intercept = TRUE,
> prewhite = TRUE) :
>    model order:  2 singularities in the computation of the projection
> matrix results are only valid up to model order 1, which I do not know
> what it means, if someone could clarify it, I would really appreciate
> it.
> 
> Attached to this email you will find my code and data I used to run
> this formula.
> 
> Thanks in advance.
> 
> Best regards,  Pedro.
> 
> 
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Hello,

Thanks for the data but the code is missing from the attachment.
Can you please post your code? In an attachment or directly in the 
e-mail body.

Rui Barradas


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