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Man Pages


Manual Reference Pages  -  BIO::SEQ::LARGESEQ (3)

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NAME

Bio::Seq::LargeSeq - SeqI compliant object that stores sequence as files in /tmp

CONTENTS

SYNOPSIS



  # normal primary seq usage



DESCRIPTION

This object stores a sequence as a series of files in a temporary directory. The aim is to allow someone the ability to store very large sequences (eg, > 100MBases) in a file system without running out of memory (eg, on a 64 MB real memory machine!).

Of course, to actually make use of this functionality, the programs which use this object <B>mustB> not call $primary_seq->seq otherwise the entire sequence will come out into memory and probably paste your machine. However, calls $primary_seq->subseq(10,100) will cause only 90 characters to be brought into real memory.

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:



  https://github.com/bioperl/bioperl-live/issues



AUTHOR - Ewan Birney

Email birney@ebi.ac.uk

APPENDIX

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

    trunc



 Title   : trunc
 Usage   : $subseq = $myseq->trunc(10,100);
 Function: Provides a truncation of a sequence,

 Example :
 Returns : a fresh Bio::SeqI object
 Args    :



    Bio::Seq::LargePrimarySeq methods

    add_sequence_as_string



 Title   : add_sequence_as_string
 Usage   : $seq->add_sequence_as_string("CATGAT");
 Function: Appends additional residues to an existing LargePrimarySeq object.
           This allows one to build up a large sequence without storing
           entire object in memory.
 Returns : Current length of sequence
 Args    : string to append



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perl v5.20.3 BIO::SEQ::LARGESEQ (3) 2016-04-05

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