Find the ‘bounds’ (i.e. start, end and length) of consecutive
numbers within a larger set of numbers in a given vector.
Usage
bounds(nums, dup.inds=FALSE, pre.sort=TRUE)
Arguments
nums
a numeric vector.
dup.inds
logical, if TRUE the bounds of consecutive duplicated
elements are returned.
pre.sort
logical, if TRUE the input vector is ordered prior to
bounds determination.
Value
Returns a three column matrix listing starts, ends and lengths.
Details
This is a simple utility function useful for summarizing the contents
of a numeric vector. For example: find the start position, end
position and lengths of secondary structure elements given a vector
of residue numbers obtained from a DSSP secondary structure
prediction.
By setting ‘dup.inds’ to TRUE then the indices of the first
(start) and last (end) duplicated elements of the vector are
returned. For example: find the indices of atoms belonging to a particular
residue given a vector of residue numbers (see below).
References
Grant, B.J. et al. (2006) Bioinformatics22,
2695--2696.