[R-sig-ME] What is the lmer/nlme equivalent of the REPEATED subcommand in SPSS's MIXED procedure?

[Maarten Jung]

Dear list,
I came across a SPSS syntax like this

MIXED value BY factor1
    /CRITERIA=CIN(95) MXITER(100) MXSTEP(10) SCORING(1)
SINGULAR(0.000000000001)
    HCONVERGE(0, ABSOLUTE) LCONVERGE(0, ABSOLUTE) PCONVERGE(0.000001,
    ABSOLUTE)
    /FIXED=factor1 | SSTYPE(3)
    /METHOD=REML
    /REPEATED=factor1 | SUBJECT(participant) COVTYPE(UN).

and struggle to find an equivalent lmer/nlme (or R in general) formulation
for this kind of models.
Does anybody know how to convert the REPEATED subcommand into R code?

Please note that I asked the question on Stack Overflow about two month ago:
https://stackoverflow.com/questions/48518514/what-is-the-lmer-nlme-equivalent-of-the-repeated-subcommand-in-spsss-mixed-proc

Best regards,
Maarten

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