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  • nora
    Member
    • Dec 2009
    • 11

    BWA: specifying SAM/BAM file header fields before read alignment?

    Dear all,

    I have found the modification of SAM/BAM file headers quite cumbersome and time-consuming, so I wonder if it is planned to include an option into BWA to specify header fields before starting the alignment, or if there is a supereasy, superfast way of adding header lines to a SAM or BAM file without overwriting the beginning of the alignment?

    Currently I am splitting the output SAM file into header and alignment, modifying the header, and concatenating them back together. This needs about 15 minutes for a 40 million reads SAM-file, which seems a bit much knowing that I only want to add a couple of alignment info lines.

    Many thanks!
  • drio
    Senior Member
    • Oct 2008
    • 323

    #2
    I don't think there are plans to incorporate that feature anytime soon. Feel free to email the mailing list.

    Dump your alignments in BAM format and process the header with picard. You should reduce the processing time.
    -drd

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    • nora
      Member
      • Dec 2009
      • 11

      #3
      Thanks for your advice!

      Comment

      • gerald2545
        Member
        • Nov 2008
        • 22

        #4
        Hello
        did you try "samtools reheader"?
        Never used, but seems to do what you want

        Gerald

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