Linux Certif

Toute la documentation sur la certification Linux LPI

Bio::DB::SeqVersion::gi.3pm

NAME

Bio::DB::SeqVersion::gi - interface to NCBI Sequence Revision History page

SYNOPSIS

Do not use this module directly, use Bio::DB::SeqVersion.

     use Bio::DB::SeqVersion;
 
     my $query = Bio::DB::SeqVersion->new(-type => 'gi');
 
     # all GIs, which will include the GI used to query
     my @all_gis = $query->get_all(2);
 
     # the most recent GI, which may or may not be the GI used to query
     my $live_gi = $query->get_recent(2);
 
     # get all the visible data on the Sequence Revision page
     my $array_ref = $query->get_history(11111111);
 
 

These methods can also take accession numbers as arguments, just like the Sequence Revision page itself.

DESCRIPTION

All sequence entries at GenBank are identified by a pair of identifiers, an accession and a numeric identifier, and this number is frequently called a GI number (GenInfo Identifier). The accession is stable, but each new version of the sequence entry for the accession receives a new GI number (see <http://www.ncbi.nlm.nih.gov/Sitemap/sequenceIDs.html> for more information on GenBank identifiers). One accession can have one or more GI numbers and the highest of these is the most recent, or ``live'', GI.

Information on an accession and its associated GI numbers is available at the Sequence Revision History page at NCBI, <http://www.ncbi.nlm.nih.gov/entrez/sutils/girevhist.cgi>, this information is not available in file format. This module queries the Web page and retrieves GI numbers and related data given an accession (e.g. NP_111111, A11111, P12345) or a GI number (e.g. 2, 11111111) as query.

FEEDBACK

Mailing Lists

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

   bioperl-l@bioperl.org                  - General discussion
   http://bioperl.org/wiki/Mailing_lists  - About the mailing lists
 
 

Support

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

bioperl-l@bioperl.org

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:

   http://bugzilla.open-bio.org/
 
 

AUTHOR - Brian Osborne

Email < osborne at optonline dot net >

CONTRIBUTORS

Torsten Seemann - torsten.seemann AT infotech.monash.edu.au

APPENDIX

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

new

  Title   : new
  Usage   : $gb = Bio::DB::SeqVersion::gi->new
  Function: Creates a new query object
  Returns : New query object
 
 

get_all

  Title   : get_all
  Usage   : my @gis = $q->get_all(2)
  Function: Get all GI numbers given a GI number
  Returns : An array of GI numbers, earliest GI number is the 0 element
  Args    : A single GI number (string)
 
 

get_recent

  Title   : get_recent
  Usage   : my $newest_gi = $q->get_recent(2)
  Function: Get most recent GI given a single GI
  Returns : String
  Args    : A single GI number (string)
 
 

get_history

  Title   : get_history
  Usage   : my $ref = $query_obj->get_history()
  Function: Queries the NCBI Revision page, gets the data from the HTML table
  Returns : Reference to an array of arrays where element 0 refers to the most 
            recent version and the last element refers to the oldest version. 
            In the second dimension the elements are:
 
            0      GI number
            1      Version
            2      Update Date
            3      Status
 
            For example, to get the GI number of the first version:
 
            $ref->[$#{@$ref}]->[0]
 
            To get the Update Date of the latest version:
 
            $ref->[0]->[2]
 
  Args    : One identifier (string)
 
 

_get_request

  Title   : _get_request
  Usage   : my $url = $self->_get_request
  Function: GET using NCBI Revision page URL, uses Root::HTTPget
  Returns : HTML
  Args    : One identifier (string)
 
 

_process_data

  Title   : _process_data
  Usage   : $self->_process_data($html)
  Function: extract data from HTML
  Args    : HTML from Revision History page
  Returns : reference to an array of arrays