Provided by: libbio-perl-perl_1.7.7-1_all 
NAME
Bio::Tools::GuessSeqFormat - Module for determining the sequence format of the contents of
a file, a string, or through a filehandle.
SYNOPSIS
# To guess the format of a flat file, given a filename:
my $guesser = Bio::Tools::GuessSeqFormat->new( -file => $filename );
my $format = $guesser->guess;
# To guess the format from an already open filehandle:
my $guesser = Bio::Tools::GuessSeqFormat->new( -fh => $filehandle );
my $format = $guesser->guess;
# The filehandle will be returned to its original position. Note that this
# filehandle can be STDIN.
# To guess the format of one or several lines of text (with
# embedded newlines):
my $guesser = Bio::Tools::GuessSeqFormat->new( -text => $linesoftext );
my $format = $guesser->guess;
# To create a Bio::Tools::GuessSeqFormat object and set the
# filename, filehandle, or line to parse afterwards:
my $guesser = Bio::Tools::GuessSeqFormat->new();
$guesser->file($filename);
$guesser->fh($filehandle);
$guesser->text($linesoftext);
# To guess in one go, given e.g. a filename:
my $format = Bio::Tools::GuessSeqFormat->new( -file => $filename )->guess;
DESCRIPTION
Bio::Tools::GuessSeqFormat tries to guess the format ("swiss", "pir", "fasta" etc.) of the
sequence or MSA in a file, in a scalar, or through a filehandle.
The guess() method of a Bio::Tools::GuessSeqFormat object will examine the data, line by
line, until it finds a line to which only one format can be assigned. If no conclusive
guess can be made, undef is returned.
If the Bio::Tools::GuessSeqFormat object is given a filehandle, e.g. STDIN, it will be
restored to its original position on return from the guess() method.
Formats
Tests are currently implemented for the following formats:
· ACeDB ("ace")
· Blast ("blast")
· ClustalW ("clustalw")
· Codata ("codata")
· EMBL ("embl")
· FastA sequence ("fasta")
· FastQ sequence ("fastq")
· FastXY/FastA alignment ("fastxy")
· Game XML ("game")
· GCG ("gcg")
· GCG Blast ("gcgblast")
· GCG FastA ("gcgfasta")
· GDE ("gde")
· Genbank ("genbank")
· Genscan ("genscan")
· GFF ("gff")
· HMMER ("hmmer")
· PAUP/NEXUS ("nexus")
· Phrap assembly file ("phrap")
· NBRF/PIR ("pir")
· Mase ("mase")
· Mega ("mega")
· GCG/MSF ("msf")
· Pfam ("pfam")
· Phylip ("phylip")
· Prodom ("prodom")
· Raw ("raw")
· RSF ("rsf")
· Selex ("selex")
· Stockholm ("stockholm")
· Swissprot ("swiss")
· Tab ("tab")
· Variant Call Format ("vcf")
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
Andreas Kähäri, andreas.kahari@ebi.ac.uk
CONTRIBUTORS
Heikki Lehväslaiho, heikki-at-bioperl-dot-org Mark A. Jensen, maj-at-fortinbras-dot-us
METHODS
Methods available to Bio::Tools::GuessSeqFormat objects are described below. Methods with
names beginning with an underscore are considered to be internal.
new
Title : new
Usage : $guesser = Bio::Tools::GuessSeqFormat->new( ... );
Function : Creates a new object.
Example : See SYNOPSIS.
Returns : A new object.
Arguments : -file The filename of the file whose format is to
be guessed, e.g. STDIN, or
-fh An already opened filehandle from which a text
stream may be read, or
-text A scalar containing one or several lines of
text with embedded newlines.
If more than one of the above arguments are given, they
are tested in the order -text, -file, -fh, and the first
available argument will be used.
file
Title : file
Usage : $guesser->file($filename);
$filename = $guesser->file;
Function : Gets or sets the current filename associated with
an object.
Returns : The new filename.
Arguments : The filename of the file whose format is to be
guessed.
A call to this method will clear the current filehandle and
the current lines of text associated with the object.
fh
Title : fh
Usage : $guesser->fh($filehandle);
$filehandle = $guesser->fh;
Function : Gets or sets the current filehandle associated with
an object.
Returns : The new filehandle.
Arguments : An already opened filehandle from which a text
stream may be read.
A call to this method will clear the current filename and
the current lines of text associated with the object.
text
Title : text
Usage : $guesser->text($linesoftext);
$linesofext = $guesser->text;
Function : Gets or sets the current text associated with an
object.
Returns : The new lines of texts.
Arguments : A scalar containing one or several lines of text,
including embedded newlines.
A call to this method will clear the current filename and
the current filehandle associated with the object.
guess
Title : guess
Usage : $format = $guesser->guess;
@format = $guesser->guess; # if given a line of text
Function : Guesses the format of the data accociated with the
object.
Returns : A format string such as "swiss" or "pir". If a
format can not be found, undef is returned.
Arguments : None.
If the object is associated with a filehandle, the position
of the filehandle will be returned to its original position
before the method returns.
HELPER SUBROUTINES
All helper subroutines will, given a line of text and the line number of the same line,
return 1 if the line possibly is from a file of the type that they perform a test of.
A zero return value does not mean that the line is not part of a certain type of file,
just that the test did not find any characteristics of that type of file in the line.
_possibly_ace
From bioperl test data, and from
"http://www.isrec.isb-sib.ch/DEA/module8/B_Stevenson/Practicals/transcriptome_recon/transcriptome_recon.html".
_possibly_blast
From various blast results.
_possibly_bowtie
Contributed by kortsch.
_possibly_clustalw
From "http://www.ebi.ac.uk/help/formats.html".
_possibly_codata
From "http://www.ebi.ac.uk/help/formats.html".
_possibly_embl
From "http://www.ebi.ac.uk/embl/Documentation/User_manual/usrman.html#3.3".
_possibly_fasta
From "http://www.ebi.ac.uk/help/formats.html".
_possibly_fastq
From bioperl test data.
_possibly_fastxy
From bioperl test data.
_possibly_game
From bioperl testdata.
_possibly_gcg
From bioperl, Bio::SeqIO::gcg.
_possibly_gcgblast
From bioperl testdata.
_possibly_gcgfasta
From bioperl testdata.
_possibly_gde
From "http://www.ebi.ac.uk/help/formats.html".
_possibly_genbank
From "http://www.ebi.ac.uk/help/formats.html". Format of [apparantly optional] file
header from "http://www.umdnj.edu/rcompweb/PA/Notes/GenbankFF.htm". (TODO: dead link)
_possibly_genscan
From bioperl test data.
_possibly_gff
From bioperl test data.
_possibly_hmmer
From bioperl test data.
_possibly_nexus
From "http://paup.csit.fsu.edu/nfiles.html".
_possibly_mase
From bioperl test data. More detail from
"http://www.umdnj.edu/rcompweb/PA/Notes/GenbankFF.htm" (TODO: dead link)
_possibly_mega
From the ensembl broswer (AlignView data export).
_possibly_msf
From "http://www.ebi.ac.uk/help/formats.html".
_possibly_phrap
From "http://biodata.ccgb.umn.edu/docs/contigimage.html". (TODO: dead link) From
"http://genetics.gene.cwru.edu/gene508/Lec6.htm". (TODO: dead link) From bioperl test
data ("*.ace.1" files).
_possibly_pir
From "http://www.ebi.ac.uk/help/formats.html". The ".,()" spotted in bioperl test data.
_possibly_pfam
From bioperl test data.
_possibly_phylip
From "http://www.ebi.ac.uk/help/formats.html". Initial space allowed on first line
(spotted in ensembl AlignView exported data).
_possibly_prodom
From "http://prodom.prabi.fr/prodom/current/documentation/data.php".
_possibly_raw
From "http://www.ebi.ac.uk/help/formats.html".
_possibly_rsf
From "http://www.ebi.ac.uk/help/formats.html".
_possibly_selex
From "http://www.ebc.ee/WWW/hmmer2-html/node27.html".
Assuming presence of Selex file header. Data exported by Bioperl on Pfam and Selex
formats are identical, but Pfam file only holds one alignment.
_possibly_stockholm
From bioperl test data.
_possibly_swiss
From "http://ca.expasy.org/sprot/userman.html#entrystruc".
_possibly_tab
Contributed by Heikki.
_possibly_vcf
From "http://www.1000genomes.org/wiki/analysis/vcf4.0".
Assumptions made about sanity - format and date lines are line 1 and 2 respectively. This
is not specified in the format document.