Description Usage Arguments Details Value Author(s) See Also Examples
Given two cutoffs, L and U, this function divides a numerical vector into contiguous parts that are above U, between L and U, and below L.
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x |
A numeric vector. |
f |
A factor used to pre-divide |
cutoff |
a numeric vector of length either 1 or 2. If length is 1, U (see details) will be cutoff and L will be -cutoff. Otherwise it specifies L and U. The function will furthermore always use the minimum of cutoff for L and the maximum for U. |
assumeSorted |
This is a statement that the function may assume
that the vector |
verbose |
Should the function be verbose? |
This function is used to find the indexes of the ‘bumps’ in functions
such as bumphunter
.
x
is a numeric vector, which is converted into three levels
depending on whether x>=U (‘up’), L<x<U (‘zero’) or x<=L
(‘down’), with L and U coming from cutoff
. We assume
that adjacent entries in x
are next to each other in some
sense. Segments, consisting of consecutive indices into x
(ie. values between 1 and length(x)
), are formed such that all
indices in the same segment belong to the same level of f
and
have the same discretized value of x
.
In other words, we can use getSegments
to find runs of x
belonging to the same level of f
and with all of the values of
x either above U, between L and U, or below L.
A list with three components, each a list of indices. Each component
of these lists represents a segment and this segment is represented by a
vector of indices into the original vectors x
and f
.
upIndex: |
a list with each entry an index of contiguous values
in the same segment. These segments have values of |
dnIndex: |
a list with each entry an index of contiguous values
in the same segment. These segments have values of |
zeroIndex: |
a list with each entry an index of contiguous
values in the same segment. These segments have values of |
Rafael A Irizarry and Kasper Daniel Hansen
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