Displaying 4 results from an estimated 4 matches for "pwrss".
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2008 Oct 30
0
lme4/anova, error message: "Calculated PWRSS for a LMM is negative"
Dear all,
I'm using the latest version of the package lme4 and R version 2.7.2
(2008-08-25).
After I run the model, I get the results of the model (cf. below). Then, I
run an ANOVA using the "anova" function and I get the following message
"Error in anova(lmer1) : Calculated PWRSS for a LMM is negative".
I went trough the R-mailing list and a similar error message was reported
but only when using "weights". As I did not use "weights" in my model, I was
wondering what could cause this error message!
Thanks in advance for any advice,
Sebastien.
R...
2008 Sep 24
0
weights option in lmer
...am using the
R version 2.7.2 (2008-08-25) and lmer version in lme4_0.999375-26, which I think it is the latest version!
I am getting and error message when I add the
option "weights" in the lmer function. This is the error message I
get "Error en mer_finalize(ans) : Calculated PWRSS for a LMM is negative".
I have been
reading in the last few weeks all the forum questions and answers about this
issue. Certainly this has been discussed MANY times before especially with
older versions of lmer (much less in the newer versions). I have been trying
different things followi...
2008 Nov 26
1
Problem with aovlmer.fnc in languageR
...als.fnc(latinsquare.lmer,
withMCMC = TRUE)
aovlmer.fnc(latinsquare.lmer,
mcmc = x$mcmc,
which = c("SOAmedium", "SOAshort"))
I get the following error message (German locale):
Fehler in anova(object) : Calculated PWRSS for a LMM is negative
Invoking traceback yields the following result:
> traceback()
4: .Call(mer_update_projection, object)
3: anova(object)
2: anova(object)
1: aovlmer.fnc(latinsquare.lmer, mcmc = x$mcmc, which = c("SOAmedium",
"SOAshort&q...
2009 Mar 09
5
Help
...withMCMC = TRUE)
> aovlmer.fnc(latinsquare.lmer,
> mcmc = x$mcmc,
> which = c("SOAmedium", "SOAshort"))
>
>
> I get the following error message (German locale):
>
>
> Fehler in anova(object) : Calculated PWRSS for a LMM is negative
>
>
> Invoking traceback yields the following result:
>
>
> > traceback()
> 4: .Call(mer_update_projection, object)
> 3: anova(object)
> 2: anova(object)
> 1: aovlmer.fnc(latinsquare.lmer, mcmc = x$mcmc, which = c("SOAm...