subXString            package:Biostrings            R Documentation

Fast substring extraction

Description:

     Functions for fast substring extraction.

Usage:

       subXString(x, start=NA, end=NA, length=NA)
       ## S4 method for signature 'XString':
       substr(x, start=NA, stop=NA)
       ## S4 method for signature 'XString':
       substring(text, first=NA, last=NA)

Arguments:

       x: An XString object for 'subXString'. A character vector, an
          XStringViews, XString, or MaskedXString object for 'substr'
          or 'substring'. 

   start: A numeric vector. 

     end: A numeric vector. 

  length: A numeric vector. 

    stop: A numeric vector. 

    text: A character vector, an XStringViews or an XString object. 

   first: A numeric vector. 

    last: A numeric vector. 

Details:

     'subXString' is deprecated in favor of 'subseq'.

Value:

     An XString object of the same base type as 'x' for 'subXString'.

     A character vector for 'substr' and 'substring'.

See Also:

     'subseq', 'letter', XString-class, XStringViews-class

