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

Fix Ace
2017-11-16T18:47:11Z

Hi, Bert,
Thank you?very much for the comments and suggestions!
Ace

    On Wednesday, November 15, 2017 10:44 AM, Bert Gunter <bgunter.4567 at
gmail.com> wrote:


 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 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 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:



> 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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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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