GenomicConsensus (quiver)

The GenomicConsensus package provides the quiver tool, PacBio's flagship consensus and variant caller. The backend logic is provided by the ConsensusCore library, which you must install first.

Installing

Make sure you have set up and activated your virtualenv, and installed pbcore and ConsensusCore (which cannot be installed automatically by pip or setuptools). Then:

% python setup.py install

Running

Basic usage is as follows:

% quiver aligned_reads.cmp.h5 -r reference.fasta -o variants.gff -o consensus.fasta -o consensus.fastq

in this example we perform haploid consensus and variant calling on the mapped reads in the aligned_reads.cmp.h5 which was aligned to reference.fasta. The reference.fasta is only used for designating variant calls, not for computing the consensus. The consensus quality score for every position can be found in the output FASTQ file.

Documentation

• More detailed installation instructions
• Quiver FAQ
• variants.gff spec
• CHANGELOG