| all.equal {base} | R Documentation |
Test if Two Objects are (Nearly) Equal
Usage
all.equal(target, current, ...)
all.equal.numeric(target, current,
tolerance= .Machine$double.eps ^ 0.5, scale=NULL)
Arguments
target |
R object. |
current |
other R object, to be compared with |
... |
Further arguments for different methods, notably the following two, for numerical comparison: |
tolerance |
numeric |
scale |
numeric scalar > 0 (or |
all.equal(x,y) is a utility to compare R objects x
and y testing “near equality”. If they are different,
comparison is still made to some extent, and a report of the
differences is returned.
There are several methods available, most of which are dispatched by
the default method, see methods("all.equal").
all.equal.list and all.equal.language provide
comparison of recursive objects.
Numerical comparison is done using averge (mean)
relative error, unless scale is used or when the
absolute difference is less than tolerance.
For complex arguments, Mod of difference is used.
attr.all.equal is used for comparing
attributes, returning NULL or character.
Either TRUE or a vector of mode
"character" describing the differences between target
and current.
Numerical differences are reported by relative error
==, and all for exact equality testing.
all.equal(pi, 355/113) # not precise enough (default tol) > relative error
stopifnot( all.equal(gamma(2:14), cumprod(1:13))) # TRUE, but
all (gamma(2:14) == cumprod(1:13)) # FALSE, since not exactly all.equal(gamma(2:14), cumprod(1:13), tol=0) # to see difference
all.equal(options(), .Options) all.equal(options(), as.list(.Options))# TRUE .Options $ myopt <- TRUE all.equal(options(), as.list(.Options)) rm(.Options) utilities logic arith