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% File src/library/base/man/as.data.frame.Rd
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% File src/library/base/man/as.data.frame.Rd
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% Part of the R package, https://www.R-project.org
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2024 R Core Team
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% Copyright 1995-2026 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{as.data.frame}
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\name{as.data.frame}
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\title{Coerce to a Data Frame}
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\title{Coerce to a Data Frame}
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\alias{as.data.frame}
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\alias{as.data.frame}
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\method{as.data.frame}{matrix}(x, row.names = NULL, optional = FALSE,
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\method{as.data.frame}{matrix}(x, row.names = NULL, optional = FALSE,
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              make.names = TRUE, \dots,
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              make.names = TRUE, \dots,
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              stringsAsFactors = FALSE)
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              stringsAsFactors = FALSE)
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as.data.frame.vector(x, row.names = NULL, optional = FALSE, \dots,
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as.data.frame.vector(x, row.names = NULL, optional = FALSE, validRN = TRUE, \dots,
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                     nm = deparse1(substitute(x)))
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                     nm = deparse1(substitute(x)))
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is.data.frame(x)
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is.data.frame(x)
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}
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}
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\arguments{
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\arguments{
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    \code{x}) are invalid.  If they are invalid, the default,
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    \code{x}) are invalid.  If they are invalid, the default,
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    \code{TRUE}, calls \code{\link{make.names}(*, unique=TRUE)};
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    \code{TRUE}, calls \code{\link{make.names}(*, unique=TRUE)};
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    \code{make.names=NA} will use \dQuote{automatic} row names and a
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    \code{make.names=NA} will use \dQuote{automatic} row names and a
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    \code{FALSE} value will signal an error for invalid row names.}
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    \code{FALSE} value will signal an error for invalid row names.}
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  %% *.vector():
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  %% *.vector():
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  \item{validRN}{a \code{\link{logical}} indicating if row names should be
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    checked to be valid; currently only checks if the row contain no
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    \code{\link{NA}}s.  This was implicitly \code{FALSE} in \R version
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    before 4.7.0.  Setting it to \code{FALSE} may still be necessary during
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    dataframe construction.}
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  \item{nm}{a \code{\link{character}} string to be used as column name.}
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  \item{nm}{a \code{\link{character}} string to be used as column name.}
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}
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}
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\value{
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\value{
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  \code{as.data.frame} returns a data frame, normally with all row names
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  \code{as.data.frame} returns a data frame, normally with all row names
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  \code{""} if \code{optional = TRUE}.
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  \code{""} if \code{optional = TRUE}.