Tagged with #compression
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Objective

Compress the read data in order to minimize file sizes, which facilitates massively multisample processing.

Prerequisites

  • TBD

Steps

  1. Compress your sequence data

1. Compress your sequence data

Action

Run the following GATK command:

java -jar GenomeAnalysisTK.jar \ 
    -T ReduceReads \ 
    -R reference.fa \ 
    -I recal_reads.bam \ 
    -L 20 \ 
    -o reduced_reads.bam 

Expected Result

This creates a file called reduced_reads.bam containing only the sequence information that is essential for calling variants.

Note that ReduceReads is not meant to be run on multiple samples at once. If you plan on merging your sample bam files, you should run ReduceReads on individual samples before doing so.

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