TerminalChar {DECIPHER} | R Documentation

## Determine the Number of Terminal Characters

### Description

Counts the number of terminal characters for every sequence in an `XStringSet`. Terminal characters are defined as a specific character repeated at the beginning and end of a sequence.

### Usage

    TerminalChar(myXStringSet,
                 char = "")

### Arguments

`myXStringSet` | An `XStringSet` object of sequences.
`char` | A single character giving the terminal character to count, or an empty character ("") indicating to count both gap ("-") and unknown (".") characters.

### Value

A `matrix` containing the results for each sequence in its respective row. The first column contains the number of leading `char`, the second contains the number of trailing `char`, and the third contains the total number of characters in-between.

### Author(s)

Erik Wright eswright@pitt.edu

### See Also

`IdLengths`

### Examples

    db <- system.file("extdata", "Bacteria_175seqs.sqlite", package="DECIPHER")
    dna <- SearchDB(db)
    t <- TerminalChar(dna)

[Package DECIPHER version 2.14.0 Index]