Set operations on vector-like objects
Perform set operations on Vector objects.
## S4 method for signature 'Vector,Vector' union(x, y) ## S4 method for signature 'Vector,Vector' intersect(x, y) ## S4 method for signature 'Vector,Vector' setdiff(x, y) ## S4 method for signature 'Vector,Vector' setequal(x, y)
x, y |
Vector-like objects. |
They're defined as follow:
setMethod("union", c("Vector", "Vector"),
function(x, y) unique(c(x, y))
)
setMethod("intersect", c("Vector", "Vector"),
function(x, y) unique(x[x %in% y])
)
setMethod("setdiff", c("Vector", "Vector"),
function(x, y) unique(x[!(x %in% y)])
)
setMethod("setequal", c("Vector", "Vector"),
function(x, y) all(x %in% y) && all(y %in% x)
)so they work out-of-the-box on Vector objects for which c,
unique, and %in% are defined.
union returns a Vector object obtained by appending to x
the elements in y that are not already in x.
intersect returns a Vector object obtained by keeping only
the elements in x that are also in y.
setdiff returns a Vector object obtained by dropping from
x the elements that are in y.
setequal returns TRUE if x and y contain the
same sets of vector elements and FALSE otherwise.
union, intersect, and setdiff propagate the names and
metadata columns of their first argument (x).
Hervé Pagès
Vector-comparison for comparing and ordering vector-like objects.
Vector-merge for merging vector-like objects.
Vector objects.
BiocGenerics::union,
BiocGenerics::intersect,
and BiocGenerics::setdiff
in the BiocGenerics package for general information about
these generic functions.
## See ?`Hits-setops` for some examples.
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