unique {BiocGenerics} | R Documentation |
Extract unique elements
Description
unique
returns an object of the same class as x
(typically
a vector-like, data-frame-like, or array-like object) but with duplicate
elements/rows removed.
NOTE: This man page is for the unique
S4 generic function
defined in the BiocGenerics package.
See ?base::unique
for the default method
(defined in the base package).
Bioconductor packages can define specific methods for objects
(typically vector-like or data-frame-like) not supported by the
default method.
Usage
unique(x, incomparables=FALSE, ...)
Arguments
x |
A vector-like, data-frame-like, or array-like object. |
incomparables , ... |
See |
Value
See ?base::unique
for the value returned by the
default method.
Specific methods defined in Bioconductor packages will typically return an object of the same class as the input object.
unique
should always behave consistently with
BiocGenerics::duplicated
.
See Also
-
base::unique
for the defaultunique
method. -
BiocGenerics::duplicated
for determining duplicate elements. -
showMethods
for displaying a summary of the methods defined for a given generic function. -
selectMethod
for getting the definition of a specific method. -
unique,Rle-method in the S4Vectors package for an example of a specific
unique
method (defined for Rle objects). -
BiocGenerics for a summary of all the generics defined in the BiocGenerics package.
Examples
unique
showMethods("unique")
selectMethod("unique", "ANY") # the default method