getReStruc | R Documentation |
Calculate random effect structure Calculates number of random effects, number of parameters, block size and number of blocks. Mostly for internal use.
getReStruc(reTrms, ss = NULL, aa = NULL, reXterms = NULL, fr = NULL)
reTrms |
random-effects terms list |
ss |
a character string indicating a valid covariance structure.
Must be one of |
aa |
additional arguments (i.e. rank) |
reXterms |
terms objects corresponding to each RE term |
fr |
model frame |
a list
blockNumTheta |
number of variance covariance parameters per term |
blockSize |
size (dimension) of one block |
blockReps |
number of times the blocks are repeated (levels) |
covCode |
structure code |
data(sleepstudy, package="lme4")
rt <- lme4::lFormula(Reaction~Days+(1|Subject)+(0+Days|Subject),
sleepstudy)$reTrms
rt2 <- lme4::lFormula(Reaction~Days+(Days|Subject),
sleepstudy)$reTrms
getReStruc(rt)
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