R help - Sep 2022 - nlme gls issue

Hi there,

I'm having issues running a gls within the nlme package that neither I nor
any of my colleagues can figure out. The gls itself seems to run fine (i.e.
doesn't give an error message and produces a seemingly normal summary
output), but when I try to calculate the rsquared of the gls model, it simply
returns an "NA". Is this an issue you've encountered before? If
so, can you point me in the right direction of how to remedy it?

Thank you!
Kayla

-------------------
Kayla Bazzana (she/her)
Ph.D. Candidate, Evans Lab
Department of Natural History, Royal Ontario Museum
Department of Ecology and Evolutionary Biology, University of Toronto


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On Fri, 16 Sep 2022 13:48:55 +0000
Kayla Bazzana <kayla.bazzana at mail.utoronto.ca> wrote:
> Hi there,
> 
> I'm having issues running a gls within the nlme package that neither
> I nor any of my colleagues can figure out. The gls itself seems to
> run fine (i.e. doesn't give an error message and produces a seemingly
> normal summary output), but when I try to calculate the rsquared of
> the gls model, it simply returns an "NA". Is this an issue
you've
> encountered before? If so, can you point me in the right direction of
> how to remedy it?
I believe that fortunes::fortune(254), although not directly
applicable, might be relevant. :-)

If you *really* believe that r-squared makes some kind of sense in the
context of *generalised* least squares, you should probably direct
further enquires to r-sig-mixed-models.

cheers,

Rolf Turner

-- 
Honorary Research Fellow
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276