isVectorAtomic | R Documentation |
The is.vector
function returns a FALSE
value in some cases where intuitively one might
expect a TRUE
value to be returned. For example,
is.vector(z)
returns FALSE
for each of the
following:
z <- 1:3;names(z) <- 1:3
z <- matrix(1:3, nrow=1)
z <- matrix(1:3, ncol=1)
These results are not necessarily incorrect, they are
just one interpretion of the definition of a vector.
Contrarily, the isVectorAtomic(z)
function returns
TRUE
for each of the above examples. Thus,
isVectorAtomic
expands the basic definition of a
vector to allow matrices containing a single row
or column and named vectors. Also, unlike is.vector
,
isVectorAtomic
returns FALSE
for objects of class list
.
isVectorAtomic(x)
x |
an object of arbitrary class. |
a vector of character strings containing the result. The length
of this vector is equal to length(x)
.
rotateVector
, mergeList
.
## cases where isVectorAtomic returns TRUE z <- 1:3;names(z) <- letters[1:3] isVectorAtomic(z) isVectorAtomic(matrix(1:3, nrow=1)) isVectorAtomic(matrix(1:3, ncol=1)) isVectorAtomic(1:5) isVectorAtomic(letters) ## cases where isVectorAtomic returns FALSE isVectorAtomic(list(1:3)) isVectorAtomic(data.frame(1:3,2:4)) isVectorAtomic(matrix(1:12, nrow=4))
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