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2017 Aug 11
2
PROC MIXED RANDOM equivalence in R nlme
...uces no errors or warnings", even after 15
minutes on an 8-core Mac Pro. As I recall, the SAS code produced an
answer in 15 seconds or less on a single core Mac II back in 1999.
Thanks again!
--Dennis
On 8/11/17 9:27 AM, Robert Baer wrote:
>
>
> On 8/10/2017 8:34 AM, Dennis F. Kahlbaum wrote:
>> -- snip --
> I don't have real help, but I'll remind you that R is case sensitive,
> and it looks like that will be at least one problem in the solution
> your are working on below:
> lme not LME
> data not DATA
> random = RANDOM
>> ----------------...
2017 Aug 11
0
PROC MIXED RANDOM equivalence in R nlme
> On Aug 11, 2017, at 7:56 AM, Dennis F. Kahlbaum <kbomb at umich.edu> wrote:
>
> Hi Robert:
>
> Thanks for your response, as well.
>
> I'm sorry. As you've discovered, I made some capitalization errors when posting my R code. The actual R code does use "lme", "data", and "random"....
2017 Aug 10
4
PROC MIXED RANDOM equivalence in R nlme
I am trying to reproduce some old SAS PROC MIXED code using R and nlme.
The data consists of emission readings from vehicles and fuel
properties. All variables are real numbers except "study" and "vehicle",
which are character. Unfortunately, since the data are confidential, I'm
unable to provide an example.
The original SAS v6.12 code is provided below:
2017 Aug 11
0
PROC MIXED RANDOM equivalence in R nlme
On 8/10/2017 8:34 AM, Dennis F. Kahlbaum wrote:
> -- snip --
I don't have real help, but I'll remind you that R is case sensitive,
and it looks like that will be at least one problem in the solution your
are working on below:
lme not LME
data not DATA
random = RANDOM
> ------------------------------------------------------...
2017 Aug 11
0
PROC MIXED RANDOM equivalence in R nlme
...experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey
2017-08-10 15:34 GMT+02:00 Dennis F. Kahlbaum <kbomb at umich.edu>:
> I am trying to reproduce some old SAS PROC MIXED code using R and nlme.
> The data consists of emission readings from vehicles and fuel properties.
> All variables are real numbers except "study" and "vehicle", which are
> character. Un...