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Bio::Assembly::Scaffold(3pm) User Contributed Perl Documentation Bio::Assembly::Scaffold(3pm)


Bio::Assembly::Scaffold - Perl module to hold and manipulate sequence assembly data.

SYNOPSIS # # Module loading use Bio::Assembly::IO;

    # Assembly loading methods
    my $aio = Bio::Assembly::IO->new(-file=>"test.ace.1", -format=>'phrap');
    my $assembly = $aio->next_assembly;
    foreach my $contig ($assembly->all_contigs) {
        # do something... (see Bio::Assembly::Contig)


Bio::Assembly::Scaffold was developed to store and manipulate data from sequence assembly programs like Phrap. It implements the ScaffoldI interface and intends to be generic enough to be used by Bio::Assembly::IO drivers written to programs other than Phrap.


Mailing Lists

User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to the Bioperl mailing lists Your participation is much appreciated.                  - General discussion  - About the mailing lists


Please direct usage questions or support issues to the mailing list:

rather than to the module maintainer directly. Many experienced and reponsive experts will be able look at the problem and quickly address it. Please include a thorough description of the problem with code and data examples if at all possible.

Reporting Bugs

Report bugs to the Bioperl bug tracking system to help us keep track the bugs and their resolution. Bug reports can be submitted via the web:

AUTHOR - Robson Francisco de Souza


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

new ()

    Title   : new
    Usage   : $scaffold = new ( -id       => "assembly 1",
                                -source   => 'program_name',
                                -contigs  => \@contigs,
                                -singlets => \@singlets );
    Function: creates a new scaffold object
    Returns : Bio::Assembly::Scaffold
    Args    : -id       : [string] scaffold name
              -source   : [string] sequence assembly program
              -contigs  : reference to array of Bio::Assembly::Contig objects
              -singlets : reference to array of Bio::Assembly::Singlet objects

Accessing general assembly data


    Title   : id
    Usage   : $assembly->id()
    Function: Get/Set assembly ID
    Returns : string or undef
    Args    : string


    Title   : annotation
    Usage   : $assembly->annotation()
    Function: Get/Set assembly annotation object
    Returns : Bio::Annotation::Collection
    Args    : none


    Title   : get_nof_contigs
    Usage   : $assembly->get_nof_contigs()
    Function: Get the number of contigs included in the scaffold
    Returns : integer
    Args    : none


    Title   : get_nof_contig_seqs
    Usage   : $assembly->get_nof_contig_seqs()
    Function: Get the number of sequences included in contigs of the 
              scaffold (no consensus sequences or singlets)
    Returns : integer
    Args    : none

get_nof_singlets (get_nof_singlet_seqs)

    Title   : nof_singlets
    Usage   : $assembly->nof_singlets()
    Function: Get the number of singlets included in the assembly
    Returns : integer
    Args    : none


    Title   : get_all_seq_ids
    Usage   : $assembly->get_all_seq_ids()
    Function: Get the ID of all sequences making up the scaffold
              (sequences from contigs and singlets, not consensus).
    Returns : array of strings
    Args    : none


    Title   : get_nof_seqs
    Usage   : $assembly->get_nof_seqs()
    Function: Get total number of sequences making up the scaffold
              (sequences from contigs and singlets, not consensus).
    Returns : integer
    Args    : none


    Title   : get_contig_seq_ids
    Usage   : $assembly->get_contig_seq_ids()
    Function: Get the ID of all sequences in contigs
    Returns : array of strings
    Args    : none


    Title   : get_contig_ids
    Usage   : $assembly->get_contig_ids()
    Function: Access list of contig IDs from assembly
    Returns : an array, if there are any contigs in the
              assembly. An empty array otherwise
    Args    : none

get_singlet_ids (get_singlet_seq_ids)

    Title   : get_singlet_ids
    Usage   : $assembly->get_singlet_ids()
    Function: Access list of singlet IDs from assembly
    Returns : array of strings if there are any singlets
              otherwise an empty array
    Args    : none


    Title   : get_seq_by_id
    Usage   : $assembly->get_seq_by_id($id)
    Function: Get a reference for an sequence making up the scaffold 
              (from a contig or singlet, not consensus)
    Returns : a Bio::LocatableSeq object
              undef if sequence $id is not found in the scaffold
    Args    : [string] sequence identifier (id)


    Title   : get_contig_by_id
    Usage   : $assembly->get_contig_by_id($id)
    Function: Get a reference for a contig
    Returns : a Bio::Assembly::Contig object or undef
    Args    : [string] contig unique identifier (ID)


    Title   : get_singlet_by_id
    Usage   : $assembly->get_singlet_by_id()
    Function: Get a reference for a singlet
    Returns : Bio::Assembly::Singlet object or undef
    Args    : [string] a singlet ID

Modifier methods


    Title   : add_contig
    Usage   : $assembly->add_contig($contig)
    Function: Add a contig to the assembly
    Returns : 1 on success
    Args    : a Bio::Assembly::Contig object
          order (optional)


    Title   : add_singlet
    Usage   : $assembly->add_singlet($seq)
    Function: Add a singlet to the assembly
    Returns : 1 on success
    Args    : a Bio::Assembly::Singlet object
              order (optional)


    Title   : update_seq_list
    Usage   : $assembly->update_seq_list()
              Synchronizes the assembly registry for sequences in
              contigs and contig actual aligned sequences content. You
              probably want to run this after you remove/add a
              sequence from/to a contig in the assembly.
    Returns : 1 for success
    Args    : none


    Title   : remove_contigs
    Usage   : $assembly->remove_contigs(1..4)
    Function: Remove contig from assembly object
    Returns : an array of removed Bio::Assembly::Contig
    Args    : an array of contig IDs 
    See function get_contig_ids() above


    Title   : remove_singlets
    Usage   : $assembly->remove_singlets(@singlet_ids)
    Function: Remove singlet from assembly object
    Returns : the Bio::Assembly::Singlet objects removed
    Args    : a list of singlet IDs
    See function get_singlet_ids() above


    Title   : remove_features_collection
    Usage   : $assembly->remove_features_collection()
    Function: Removes the collection of features associated to every
              contig and singlet of the scaffold. This can be useful
              to save some memory (when contig and singlet features are
              not needed).
    Returns   : none
    Argument  : none

Contig and singlet selection methods


    Title   : select_contigs
    Usage   : $assembly->select_contigs(@list)
    Function: Select an array of contigs from the assembly
    Returns : an array of Bio::Assembly::Contig objects
    Args    : an array of contig ids
    See function get_contig_ids() above


    Title   : select_singlets
    Usage   : $assembly->select_singlets(@list)
    Function: Selects an array of singlets from the assembly
    Returns : an array of Bio::Assembly::Singlet objects
    Args    : an array of singlet ids
    See function get_singlet_ids() above


    Title   : all_contigs
    Usage   : my @contigs = $assembly->all_contigs
              Returns a list of all contigs in this assembly.  Contigs
              are both clusters and alignments of one or more reads,
              with an associated consensus sequence.
    Returns : array of Bio::Assembly::Contig (in lexical id order)
    Args    : none


    Title   : all_singlets
    Usage   : my @singlets = $assembly->all_singlets
              Returns a list of all singlets in this assembly.
          Singlets are isolated reads, without non-vector
          matches to any other read in the assembly.
    Returns : array of Bio::Assembly::Singlet objects (in lexical order by id)
    Args    : none
2018-10-27 perl v5.26.2