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This page documents how to perform variant calling from low-coverage sequencing data using glfmultiples and thunder. The pipeline was originally developed by [mailto:yunli@med.unc.edu Yun Li] for the 1000 Genomes Low Coverage Pilot Project.  

This page documents how to perform variant calling from low-coverage sequencing data using glfmultiples and thunder. The pipeline was originally developed by [mailto:yunli@med.unc.edu Yun Li] for the 1000 Genomes Low Coverage Pilot Project.  

== Input Data  ==

>== Input Data  ==

To get started, you will need glf files in the standard format [http://samtools.sourceforge.net/SAM1.pdf glf format]. Sample files are available at [ftp://share.sph.umich.edu/1000genomes/pilot1/examples/glf.tgz sample glf files].  

To get started, you will need glf files in the standard format [http://samtools.sourceforge.net/SAM1.pdf glf format]. Sample files are available at [ftp://share.sph.umich.edu/1000genomes/pilot1/examples/glf.tgz sample glf files].  

If you do not have glf files, you can generate them from bam files (bam format also specified in [http://samtools.sourceforge.net/SAM1.pdf glf format bam format]) using the following command line:  

If you do not have glf files, you can generate them from bam files (bam format also specified in [http://samtools.sourceforge.net/SAM1.pdf glf format bam format]) using the following command line:  

   samtools pileup -g -T 1 -f ref.fa my.bam > my.glf

   samtools pileup -g -T 1 -f ref.fa my.bam > my.glf

Note: you will need the reference fasta file ref.fa to create glf file from bam file.  

Note: you will need the reference fasta file ref.fa to create glf file from bam file.

 

== How to Run  ==

== How to Run  ==