BiocGenerics (version 0.18.0)

match: Value matching


match returns a vector of the positions of (first) matches of its first argument in its second.

NOTE: This man page is for the match S4 generic function defined in the BiocGenerics package. See ?base::match for the default method (defined in the base package). Bioconductor packages can define specific methods for objects (typically vector-like) not supported by the default method.


match(x, table, nomatch=NA_integer_, incomparables=NULL, ...)


x, table
Vector-like objects (typically of the same class, but not necessarily).
nomatch, incomparables
See ?base::match for a description of these arguments.
Additional arguments, for use in specific methods.


The same as the default method, that is, an integer vector of the same length as x giving the position in table of the first match if there is a match, otherwise nomatch.See ?base::match for more details.Specific methods defined in Bioconductor packages should behave as consistently as possible with the default method.

See Also

  • base::match for the default match method.

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

  • selectMethod for getting the definition of a specific method.

  • match,Hits,Hits-method in the S4Vectors package for an example of a specific match method (defined for Hits objects).

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


Run this code
match  # note the dispatch on the 'x' and 'table' args only
selectMethod("match", c("ANY", "ANY"))  # the default method

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