class BioInterchange::Genomics::VCFFeature
Represents a single genomic feature of a VCF file.
Public Class Methods
new(chromosome, position, id, reference_bases, alternative_alleles, quality_score, filters, info = {}, samples = [])
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Creates a new feature representation. A feature is described on one line of the VCF file.
chromosome
-
an identifier that determines the chromosome on which the feature resides
position
-
the feature locus on the chromosome
id
-
a unique identifier of the feature
reference_bases
-
reference alleles of the feature
alternative_alleles
-
alternative alleles of the feature (non-reference alleles)
quality_score
-
phred-scaled quality score for the assertions concerning reference-/alternative-alleles
filters
-
list of VCF filters that a feature has failed
info
-
a map of additional attributes associated with the feature
samples
-
sample information specific to the described feature
Calls superclass method
BioInterchange::Genomics::GFF3Feature::new
# File lib/biointerchange/genomics/vcf_feature.rb, line 17 def initialize(chromosome, position, id, reference_bases, alternative_alleles, quality_score, filters, info = {}, samples = []) # Fill in phase, which is always omitted in GVF features (after 'strand', before 'attributes'): # Translations to somewhat fit the existing GFF3/GVF model (GFF3/GVF left, VCF right): # # sequence_id -> chromosome # source -> nil # type -> nil # start_coordinate -> position # end_coordinate -> position # score -> quality_score # strand -> nil # phase -> nil # attributes -> info # # Parameters that do not map directly to super's parameters are placed in `info` # with a space as prefix. For example, `reference_bases` becomes the key # ` reference_bases` in `info`. info[' id'] = [ id ] if id info[' reference_bases'] = [ reference_bases ] info[' alternative_alleles'] = alternative_alleles info[' filters'] = filters info[' samples'] = samples super(chromosome, nil, nil, position, position, quality_score, BioInterchange::Genomics::GFF3Feature::POSITIVE, nil, info) end