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strand(x, ...)
strand(x, ...) <- value
unstrand(x)
invertStrand(x)
"invertStrand"(x)x.
x is a vector-like object, strand(x) will typically
return a vector-like object parallel to x, that is, an
object of the same length as x where the i-th element describes
the strand of the i-th element in x.unstrand(x) and invertStrand(x) return a copy of x
with the strand set to "*" for unstrand or inverted for
invertStrand (i.e. "+" and "-" switched, and
"*" untouched).
strand methods defined in the GenomicRanges package
use the same set of 3 values (called the "standard strand levels") to
specify the strand of a genomic location: +, -, and *.
* is used when the exact strand of the location is unknown,
or irrelevant, or when the "feature" at that location belongs to
both strands. Note that unstrand is not a generic function, just a convenience
wrapper to the generic strand setter (strand<-) that does:
strand(x) <- "*" xThe default method for
invertStrand does:
strand(x) <- invertStrand(strand(x)) x
showMethods for displaying a summary of the
methods defined for a given generic function.
selectMethod for getting the definition of
a specific method.
strand method (defined for GRanges
objects).
strand
showMethods("strand")
`strand<-`
showMethods("strand<-")
unstrand
invertStrand
showMethods("invertStrand")
selectMethod("invertStrand", "ANY") # the default method
library(GenomicRanges)
showMethods("strand")
selectMethod("strand", "missing")
strand()
showMethods("strand<-")
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