longestConsecutive: Obtain the length of the longest substring containing only...

In Biostrings: Efficient manipulation of biological strings

Description

This function accepts a character vector and computes the length of the longest substring containing only letter for each element of x.

Usage

longestConsecutive(seq, letter) 

Arguments

seq	Character vector.
letter	Character vector of length 1, containing one single character.

Details

The elements of x can be in upper case, lower case or mixed. NAs are handled.

Value

An integer vector of the same length as x.

Author(s)

W. Huber

Examples

 v = c("AAACTGTGFG", "GGGAATT", "CCAAAAAAAAAATT")
 longestConsecutive(v, "A")

Example output

Loading required package: BiocGenerics
Loading required package: parallel

Attaching package: 'BiocGenerics'

The following objects are masked from 'package:parallel':

    clusterApply, clusterApplyLB, clusterCall, clusterEvalQ,
    clusterExport, clusterMap, parApply, parCapply, parLapply,
    parLapplyLB, parRapply, parSapply, parSapplyLB

The following objects are masked from 'package:stats':

    IQR, mad, sd, var, xtabs

The following objects are masked from 'package:base':

    Filter, Find, Map, Position, Reduce, anyDuplicated, append,
    as.data.frame, cbind, colMeans, colSums, colnames, do.call,
    duplicated, eval, evalq, get, grep, grepl, intersect, is.unsorted,
    lapply, lengths, mapply, match, mget, order, paste, pmax, pmax.int,
    pmin, pmin.int, rank, rbind, rowMeans, rowSums, rownames, sapply,
    setdiff, sort, table, tapply, union, unique, unsplit, which,
    which.max, which.min

Loading required package: S4Vectors
Loading required package: stats4

Attaching package: 'S4Vectors'

The following object is masked from 'package:base':

    expand.grid

Loading required package: IRanges
Loading required package: XVector

Attaching package: 'Biostrings'

The following object is masked from 'package:base':

    strsplit

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Biostrings documentation built on Nov. 8, 2020, 11:12 p.m.