Row and column names

Description

Retrieve the row or column names of a matrix-like R object.

NOTE: This man page is for the rownames and colnames S4 generic functions defined in the BiocGenerics package. See ?base::rownames for the default methods (defined in the base package). Bioconductor packages can define specific methods for objects (typically matrix-like) not supported by the default methods.

Usage

rownames(x, do.NULL=TRUE, prefix="row")
colnames(x, do.NULL=TRUE, prefix="col")

Arguments

Value

NULL or a character vector of length nrow(x) for rownames and ncol(x) for colnames(x). See ?base::rownames for more information about the default methods.

Specific methods defined in other Bioconductor packages should behave as consistently as possible with the default methods.

See Also

base::rownames for the default rownames and colnames methods.

showMethods for displaying a summary of the methods defined for a given generic function.

selectMethod for getting the definition of a specific method.

rownames,DataFrame-method in the IRanges package for the rownames method defined for DataFrame objects.

BiocGenerics for a summary of all the generics defined in the BiocGenerics package.

Examples

rownames  # note the dispatch on the 'x' arg only
showMethods("rownames")
selectMethod("rownames", "ANY")  # the default method

colnames  # note the dispatch on the 'x' arg only
showMethods("colnames")
selectMethod("colnames", "ANY")  # the default method