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% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/utils.R
\name{set_parent}
\alias{set_parent}
\title{Specify the parent document of child documents}
\usage{
set_parent(parent)
}
\arguments{
\item{parent}{Path to the parent document, relative to the current child
document.}
}
\value{
The preamble is extracted and stored to be used later when the
complete output is written.
}
\description{
This function extracts the LaTeX preamble of the parent document to use for
the child document, so that the child document can be compiled as an
individual document.
}
\details{
When the preamble of the parent document also contains code chunks and inline
R code, they will be evaluated as if they were in this child document. For
examples, when \pkg{knitr} hooks or other options are set in the preamble of
the parent document, it will apply to the child document as well.
}
\note{
Obviously this function is only useful when the output format is LaTeX.
This function only works when the child document is compiled in a
standalone mode using \code{\link{knit}()} (instead of being called in
\code{\link{knit_child}()}); when the parent document is compiled, this
function in the child document will be ignored.
}
\examples{
## can use, e.g. \Sexpr{set_parent('parent_doc.Rnw')} or
# <<setup-child, include=FALSE>>=
# set_parent('parent_doc.Rnw')
# @
}
\references{
\url{https://yihui.org/knitr/demo/child/}
}
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