X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=wiki%2FPhyloBioRuby.wiki;h=a3be9609e4686c7e01d25b590957af1e70c44b88;hb=3b13b835acf5bc4ed44cf28682a846e748f9b46b;hp=44136a654f67c20a3b4c1b0f0b54a27345d076d9;hpb=bacc8852471ae415fe71942d006671f8ead35e4f;p=jalview.git diff --git a/wiki/PhyloBioRuby.wiki b/wiki/PhyloBioRuby.wiki index 44136a6..a3be960 100644 --- a/wiki/PhyloBioRuby.wiki +++ b/wiki/PhyloBioRuby.wiki @@ -23,6 +23,18 @@ Copyright (C) 2011 Christian M Zmasek. All rights reserved. === Reading in a Multiple Sequence Alignment from a File === +This automatically determines the format +{{{ +ff = Bio::FlatFile.auto('bcl2.fasta') +ff.each_entry do |entry| + puts entry.entry_id # identifier of the entry + puts entry.definition # definition of the entry + puts entry.seq # sequence data of the entry +end +}}} + +==== ClustalW Format ==== + The following example shows how to read in a *ClustalW*-formatted multiple sequence alignment. {{{ @@ -43,7 +55,41 @@ msa.each do |entry| end }}} - +==== FASTA Format ==== + +The following example shows how to read in a *FASTA*-formatted multiple sequence file. (_This seems a little clumsy, I wonder if there is a more direct way, avoiding the creation of an array.) +{{{ +#!/usr/bin/env ruby +require 'bio' + +# Reads in a FASTA-formatted multiple sequence alignment (which does +# not have to be aligned, though) and stores its sequences in +# array 'seq_ary'. +seq_ary = Array.new +fasta_seqs = Bio::Alignment::MultiFastaFormat.new(File.open('infile.fasta').read) +fasta_seqs.entries.each do |seq| + seq_ary.push(seq) +end + +# Creates a multiple sequence alignment (possibly unaligned) named +# 'seqs' from array 'seq_ary'. +seqs = Bio::Alignment.new(seq_ary) + +# Prints each sequence to the console. +seqs.each { |seq| puts seq.to_s } + +# Writes multiple sequence alignment (possibly unaligned) 'seqs' +# to a file in PHYLIP format. +File.open('outfile.phylip', 'w') do |f| + f.write(seqs.output(:phylip)) +end +}}} + +Relevant API documentation: + + * [http://bioruby.open-bio.org/rdoc/classes/Bio/ClustalW/Report.html Bio::ClustalW::Report] + * [http://bioruby.open-bio.org/rdoc/classes/Bio/Alignment.html Bio::Alignment] + * [http://bioruby.open-bio.org/rdoc/classes/Bio/Sequence.html Bio::Sequence] === Writing a Multiple Sequence Alignment to a File === @@ -82,8 +128,6 @@ f.write(align.output(:phylipnon)) === Formatting of Individual Sequences === -_... to be done_ - !BioRuby can format molecular sequences in a variety of formats. Individual sequences can be formatted to (e.g.) Genbank format as shown in the following examples. @@ -101,14 +145,12 @@ The following symbols determine the output format: * `:genbank` for Genbank * `:embl` for EMBL * `:fasta` for FASTA - * `:fasta_ncbi` for - * `:raw` for - * `:fastq` for - * `:fastq_sanger` for - * `:fastq_solexa` for - * `:fastq_illumina` for - * `:fasta_numeric` for - * `:qual` for + * `:fasta_ncbi` for NCBI-type FASTA + * `:raw` for raw sequence + * `:fastq` for FASTQ (includes quality scores) + * `:fastq_sanger` for Sanger-type FASTQ + * `:fastq_solexa` for Solexa-type FASTQ + * `:fastq_illumina` for Illumina-type FASTQ == Calculating Multiple Sequence Alignments ==