10-10-2008
Quote:
Originally Posted by
monikersupreme
This code doesn't compile (regcomp throws an error)... is there any way to get regcomp/regexec to recognize whitespace (using "_" doesn't work) or a word boundary?
The code compiles under gcc 4.1.2 Linux. As to the other question, yes it's possible. Try searching google for "POSIX.2 regular expressions" for more information.
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LEARN ABOUT DEBIAN
bio::graphics::wiggle::loader
Bio::Graphics::Wiggle::Loader(3pm) User Contributed Perl Documentation Bio::Graphics::Wiggle::Loader(3pm)
SYNOPSIS
my $loader = Bio::Graphics::Wiggle::Loader->new('/base/directory/for/wigfiles','wibfilename');
my $fh = IO::File->new('uploaded_file.txt');
$loader->load($fh);
my $gff3_file = $loader->featurefile('gff3',$method,$source);
my $featurefile = $loader->featurefile('featurefile');
USAGE
This module loads Bio::Graphics::Wiggle files from source files that use Jim Kent's "WIG" format:
http://genome.ucsc.edu/google/goldenPath/help/wiggle.html
Several data sets can be grouped together in a single WIG source file. The load() method accepts the path to a WIG source file, and will
create one or more .wib ("wiggle binary") databases of quantitative data in the directory indicated when you created the loader. Call the
featurefile() method to return a text file in either GFF3 or Bio::Graphics::FeatureFile format, suitable for loading into a gbrowse
database.
METHODS
$loader = Bio::Graphics::Wiggle::Loader->new('/base/directory' [,'my_data'])
Create a new loader. The first argument specifies the base directory in which the loaded .wib files will be created. The second
argument specifies the base name for the created .wib files, or "track" if not specified.
$loader->load($fh)
Load the data from a source WIG file opened on a filehandle.
$data = $loader->featurefile($type [,$method,$source])
Return the data corresponding to a GFF3 or Bio::Graphics::FeatureFile. The returned file will have one feature per WIG track, and a
properly formatted "wigfile" attribute that directs Bio::Graphics to the location of the quantitative data.
$type is one of "gff3" or "featurefile". In the case of "gff3", you may specify an optional method and source for use in describing
each feature. In the case of "featurefile", the returned file will contain GBrowse stanzas that describe a reasonable starting format
to display the data.
$loader->allow_sampling(1)
If allow_sampling() is passed a true value, then very large files (more than 5 MB) will undergo a sampling procedure to find their
minimum and maximum values and standard deviation. Otherwise, file will be read in its entirety to generate those statistics.
EXTENSIONS
Several extensions to the WIG format "track" declaration are recognized.
transform=<transform>
Specify a transform to be performed on all numeric data within this track prior to loading into the binary wig file. Currently, the
following three declarations are recognized:
transform=logtransform y' = 0 for y == 0
y' = log(y) for y > 0
y' = -log(-y) for y < 0
transform=logsquared y' = log(y**2) for y != 0
y' = 0 for y == 0
transform=none y' = y (no transform - the default)
trim=<trim>
Specify a trimming function to be performed on the data prior to scaling. Currently, the following trim functions are recognized:
trim=stdev1 trim to plus/minus 1 standard deviation of the mean
trim=stdev2 trim to plus/minus 2 standard deviations of the mean (default)
trim=stdevN trim to plus/minus N standard deviations of the mean
trim=none no trimming
Example entended track declaration:
track type=wiggle_0 name="example" description="20 degrees, 2 hr"
trim=stdev2 transform=logsquared
SEE ALSO
Bio::Graphics::Wiggle, Bio::Graphics::Glyph::wiggle_xyplot, Bio::Graphics::Glyph::wiggle_density, Bio::Graphics::Panel,
Bio::Graphics::Glyph, Bio::Graphics::Feature, Bio::Graphics::FeatureFile
AUTHOR
Lincoln Stein <lstein@cshl.org>.
Copyright (c) 2007 Cold Spring Harbor Laboratory
This package and its accompanying libraries is free software; you can redistribute it and/or modify it under the terms of the GPL (either
version 1, or at your option, any later version) or the Artistic License 2.0. Refer to LICENSE for the full license text. In addition,
please see DISCLAIMER.txt for disclaimers of warranty.
perl v5.14.2 2012-02-20 Bio::Graphics::Wiggle::Loader(3pm)