Bio::AlignIO::proda - proda sequence input/output stream

This provides the basic capabilities to parse the output alignments from the ProDA multiple sequence alignment program (


Do not use this module directly. Use it via the Bio::AlignIO class.


This object can transform Bio::Align::AlignI objects to and from proda files.


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AUTHORS - Albert Vilella

Email: avilella-at-gmail-dot-com


The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _


 Title   : new
 Usage   : $alignio = Bio::AlignIO->new(-format => 'proda',
                       -file => 'filename');
 Function: returns a new Bio::AlignIO object to handle proda files
 Returns : Bio::AlignIO::proda object
 Args    : -verbose => verbosity setting (-1, 0, 1, 2)
           -file    => name of file to read in or to write, with ">"
           -fh      => alternative to -file param - provide a filehandle
                       to read from or write to
           -format  => alignment format to process or produce
           -percentages => display a percentage of identity
                           in each line of the alignment (proda only)
           -linelength=> alignment output line length (default 60)


 Title   : next_aln
 Usage   : $aln = $stream->next_aln()
 Function: returns the next alignment in the stream
 Returns : Bio::Align::AlignI object
 Args    : NONE

See Bio::Align::AlignI for details


 Title   : write_aln
 Usage   : $stream->write_aln(@aln)
 Function: writes the proda-format object (.aln) into the stream
 Returns : 1 for success and 0 for error
 Args    : Bio::Align::AlignI object


 Title   : percentages
 Usage   : $obj->percentages($newval)
 Function: Set the percentages flag - whether or not to show percentages in
           each output line
 Returns : value of percentages
 Args    : newvalue (optional)


 Title   : line_length
 Usage   : $obj->line_length($newval)
 Function: Set the alignment output line length
 Returns : value of line_length
 Args    : newvalue (optional)


 Title   : no_header
 Usage   : $obj->no_header($newval)
 Function: Set if the alignment input has a CLUSTAL header or not
 Returns : value of no_header
 Args    : newvalue (optional)