abIseq {Matrix} | R Documentation |
Generation of abstract index vectors, i.e., objects of class
"abIndex"
.
abIseq()
is designed to work entirely like seq
,
but producing "abIndex"
vectors.
abIseq1()
is its basic building block, where
abIseq1(n,m)
corresponds to n:m
.
c(x, ...)
will return an "abIndex"
vector, when x
is one.
abIseq1(from = 1, to = 1)
abIseq (from = 1, to = 1, by = ((to - from)/(length.out - 1)),
length.out = NULL, along.with = NULL)
## S3 method for class 'abIndex'
c(...)
from, to |
the starting and (maximal) end value of the sequence. |
by |
number: increment of the sequence. |
length.out |
desired length of the sequence. A
non-negative number, which for |
along.with |
take the length from the length of this argument. |
... |
in general an arbitrary number of R objects; here,
when the first is an |
An abstract index vector, i.e., object of class
"abIndex"
.
the class abIndex
documentation;
rep2abI()
for another constructor;
rle
(base).
stopifnot(identical(-3:20,
as(abIseq1(-3,20), "vector")))
try( ## (arithmetic) not yet implemented
abIseq(1, 50, by = 3)
)