[R] error message for function: lmer (from lme4 package)

Bert Gunter
2017-11-15T15:44:26Z

Always cc the list, which I have done here. I am not a (free) private
consultant, nor do I have all the answers.

Based on what you sent me, which is not what you have previously posted,
you failed to load the lme3 package. See ?library.

As for the appropriateness of your modeling, you should do what David
already suggested and post to the r-sig-mixed-models list instead.

-- Bert



Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Wed, Nov 15, 2017 at 5:09 AM, Fix Ace <acefix at rocketmail.com> wrote:

> Hi, Bert,
>
> Sorry about that! David seemed to be able to read the post since he
> replied. Here I just email you the sample code and error message:
>
> > example.3=data.frame(levels=as.numeric(XXX[,c(4)]),
>
replicate=rep(c("0","1","2","3","4","5"),3),conditions=c(rep("11",6),rep("12",6),rep(>
> example.3
>     levels replicate conditions
> 1  43.1111         0         11
> 2  42.0942         1         11
> 3  57.8131         2         11
> 4  57.1726         3         11
> 5  77.8678         4         11
> 6  44.7578         5         11
> 7  69.5078         0         12
> 8  52.0581         1         12
> 9  40.0602         2         12
> 10 45.5487         3         12
> 11 43.6201         4         12
> 12 60.4939         5         12
> 13 64.1932         0         13
> 14 53.4055         1         13
> 15 59.6701         2         13
> 16 52.6922         3         13
> 17 53.8712         4         13
> 18 60.2770         5         13
> > m.example.3=lmer(as.numeric(levels)~conditions+(
> conditions|replicate),data=example.3)
> Error in lmer(as.numeric(levels) ~ conditions + (conditions | replicate),
> :
>   could not find function "lmer"
> >
>
> Hopefully you could read it and provide some comments!
>
> Thank you very much for your time.
>
> Kind regards,
>
> Ace
>
>
>
>
> On Tuesday, November 14, 2017 6:12 PM, Bert Gunter <bgunter.4567 at
gmail.com>
> wrote:
>
>
> Still a complete mess!
>
> Post in **plain text**. This should be an option in your email software.
> Please seek local help if you cannot figure out how to do this.
>
> -- Bert
>
>
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along
and
> sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip
)
>
> On Tue, Nov 14, 2017 at 12:49 PM, Fix Ace via R-help <r-help at
r-project.org
> > wrote:
>
> Hi, David,
> Thank you very much for getting back to me! Sorry about the messy code
> example. I am re-posting here (including the error message):
> > example.3=data.frame(levels= as.numeric(XXX[,c(4)]),
> replicate=rep(c("0","1","2","
3","4","5"),3),conditions=c(
> rep("11",6),rep("12",6),rep(" 13",6)))>
example.3    levels replicate
> conditions1  43.1111         0         112  42.0942         1         113
> 57.8131         2         114  57.1726         3         115  77.8678
>   4         116  44.7578         5         117  69.5078         0
> 128  52.0581         1         129  40.0602         2         1210 45.5487
>         3         1211 43.6201         4         1212 60.4939         5
>     1213 64.1932         0         1314 53.4055         1         1315
> 59.6701         2         1316 52.6922         3         1317 53.8712
>   4         1318 60.2770         5         13>
m.example.3=lmer(as.numeric(
> levels)~conditions+( conditions|replicate),data= example.3)Error: number of
> observations (=18) <= number of random effects (=18) for term
(conditions |
> replicate); the random-effects parameters and the residual variance (or
> scale parameter) are probably unidentifiable>
> Please let me know if it is readable this time.
> Again, many thanks for your time and please help me fix the issue.
> Kind regards,
> Ace
>
>     On Tuesday, November 14, 2017 12:19 PM, David Winsemius <
> dwinsemius at comcast.net> wrote:
>
>
>
> > On Nov 14, 2017, at 5:13 AM, Fix Ace via R-help <r-help at
r-project.org>
> wrote:
> >
> > Dear R Community,
> > My data have 3 conditions and each condition has 6 replicates. I am
> trying to fit my data for a linear mixed model using the lmer function from
> lme4 package to find the random effects of the replicates;
>
> Better venue for this question might be SIG-mixed-models. See the link
> avaialble at the bottom of every posting from rhelp:
>
> https://stat.ethz.ch/mailman/ listinfo/r-help
> <https://stat.ethz.ch/mailman/listinfo/r-help>:
>
>
>
> > however, I got the error message. Here are the example codes:
> >> example.3=data.frame(levels= as.numeric(XXX[,c(4)]),
> replicate=rep(c("0","1","2","
3","4","5"),3),conditions=c(
> rep("11",6),rep("12",6),rep(" 13",6)))>
example.3    levels replicate
> conditions1  43.1111        0        112  42.0942        1        113
> 57.8131        2        114  57.1726        3        115  77.8678        4
>       116  44.7578        5        117  69.5078        0        128
> 52.0581        1        129  40.0602        2        1210 45.5487        3
>       1211 43.6201        4        1212 60.4939        5        1213
> 64.1932        0        1314 53.4055        1        1315 59.6701        2
>       1316 52.6922        3        1317 53.8712        4        1318
> 60.2770        5        13> m.example.3=lmer(as.numeric(
> levels)~conditions+( conditions|replicate),data= example.3)Error: number of
> observations (=18) <= number of random effects (=18) for term
(conditions |
> replicate); the random-effects parameters and the residual variance (or
> scale parameter) are probably unidentifiable>
> > Could anyone help me figure out how to fix the issue?
> > Thank you very much for any inputs!
> > Ace
> >
> >     [[alternative HTML version deleted]]
>
> Complete mess. If you haven't yet been advised to posting in plain
text,
> then this should be your wakeup call. If you have, then why are you
> ignoring sensible advice?
>
>
> >
> > ______________________________ ________________
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> > https://stat.ethz.ch/mailman/ listinfo/r-help
> <https://stat.ethz.ch/mailman/listinfo/r-help>
> > PLEASE do read the posting guide http://www.R-project.org/
> posting-guide.html <http://www.r-project.org/posting-guide.html>
> > and provide commented, minimal, self-contained, reproducible code.
>
> David Winsemius
> Alameda, CA, USA
>
>
>
> 'Any technology distinguishable from magic is insufficiently
advanced.'
> -Gehm's Corollary to Clarke's Third Law
>
>
>
>
>
>
>
>
>         [[alternative HTML version deleted]]
>
> ______________________________ ________________
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