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\title{Create Z, Lambda, Lind, etc.}
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\item{bars}{a list of parsed random-effects terms}
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\item{fr}{a model frame in which to evaluate these terms}
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a list with components \item{Zt}{transpose of the sparse
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model matrix for the random effects}
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\item{Lambdat}{transpose of the sparse relative
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covariance factor} \item{Lind}{an integer vector of
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indices determining the mapping of the elements of the
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\code{theta} to the \code{"x"} slot of \code{Lambdat}}
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\item{theta}{initial values of the covariance parameters}
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\item{lower}{lower bounds on the covariance parameters}
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\item{flist}{list of grouping factors used in the
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random-effects terms} \item{cnms}{a list of column names
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of the random effects according to the grouping factors}
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From the result of \code{\link{findbars}} applied to a
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model formula and and the evaluation frame, create the
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model matrix, etc. associated with random-effects terms.
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See the description of the returned value for a detailed
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Other utilities: \code{\link{findbars}},
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\code{\link{mkRespMod}}, \code{\link{nlformula}},
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\code{\link{nobars}}, \code{\link{subbars}}