RangedData-utils {IRanges} | R Documentation |
Utility functions for manipulating RangedData
objects.
## S4 method for signature 'expressionORlanguage, ## RangedData': eval(expr, envir, enclos = parent.frame()) ## S4 method for signature 'RangedData': range(x, ..., na.rm = FALSE)
expr |
The expression , call , or name to be
evaluated. |
envir |
The RangedData object in which to evaluate
expr . |
enclos |
The environment in which to look for symbols that
do not exist in the environment formed from
RangedData . |
x |
A RangedData object |
... |
Additional RangedData objects |
na.rm |
Ignored |
The eval
method converts the RangedData
object
specified in envir
to an environmnent
, with
enclos
as its parent, and then evaluates
expr
within that environment. The RangedData
environment
contains the following objects:
ranges
unlist(ranges(envir))
,
i.e. all of the ranges in a single Ranges
object.colnames(envir)
envir
are stored
individually by their column names.
The objects are not actually copied into the
environment. Rather, they are dynamically bound using
makeActiveBinding
. This prevents unnecessary copying of
the data from the external vectors into R vectors. The values are
cached, so that the data is not copied every time the symbol is
accessed.
range
returns a RangesList
resulting from calling
range(ranges(x))
, i.e. the
bounds of the ranges in each space.
The result of expression evaluation.
Michael Lawrence
FilterRules
objects, which can be evaluated on a
RangedData
, and the base eval
function.
ranges <- IRanges(c(1,2,3),c(4,5,6)) score <- c(10L, 2L, NA) rd <- RangedData(ranges, score) eval(quote(score > 3), rd) range(rd) rd2 <- RangedData(IRanges(c(5,2,0), c(6,3,1))) range(rd, rd2)