| which {BiocGenerics} | R Documentation |
These functions all return a vector of subscripts into their input.
NOTE: This man page is for the which, which.max and
which.min S4 generic functions defined in the
BiocGenerics package. See ?base::which and
?base::which.min for the default methods (defined
in the base package). Bioconductor packages can define specific
methods for objects (typically vector-like) not supported by the
default methods.
which(x, arr.ind = FALSE, useNames = TRUE, ...) which.max(x, ...) which.min(x, ...)
x |
Vector-like object, logical for |
arr.ind, useNames |
See |
... |
Additional arguments, for use in specific methods. |
See ?base::which and
?base::which.min for the value returned by the
default methods.
Specific methods defined in Bioconductor packages will typically return an object of the same class as the input objects.
The default methods (defined in the base package) only take a
fixed set of arguments. We've added the ... argument to the
generic functions defined in the BiocGenerics package so they
can be called with an arbitrary number of effective arguments. This
typically allows methods to add extra arguments for
controlling/altering the behavior of the operation. Like for example
the global argument supported by the which.max
method for NumericList objects (defined in the
IRanges package).
base::which for the default which,
base::which.min for the others.
showMethods for displaying a summary of the
methods defined for a given generic function.
selectMethod for getting the definition of
a specific method.
which.max,NumericList-method in the
IRanges package for an example of a specific
which.max method (defined for
NumericList objects).
BiocGenerics for a summary of all the generics defined in the BiocGenerics package.
which
showMethods("which")
selectMethod("which", c("ANY", "ANY")) # the default method
which.max
showMethods("which.max")
selectMethod("which.max", c("ANY", "ANY")) # the default method
which.min
showMethods("which.min")
selectMethod("which.min", c("ANY", "ANY")) # the default method