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  • Philcolson
    Member
    • Jul 2012
    • 12

    #1

    Basic data extraction on bam files

    I'm trying to get read counts for things like reference normal forward/reverse count, alternative/reference forward/reverse counts from a bam file. I've honestly read through so many forum posts and BioStar and I can't seem to find the answer. Any help would be appreciated.
  • GenoMax
    Senior Member
    • Feb 2008
    • 7142

    #2
    This should still work thought I have not used it recently: http://genome.sph.umich.edu/wiki/BamUtil:_validate

    Comment

    • Philcolson
      Member
      • Jul 2012
      • 12

      #3
      I recall running into this site a bit ago. I'll give it another go. Thank you very much.

      Are read counts not something typically used/had? I'm a bit of a novice in the art, but this strikes me as very important, no?

      Comment

      • swbarnes2
        Senior Member
        • May 2008
        • 910

        #4
        Forward and reverse counts should be 50/50. You could get counts for all the flags, and tell from that how many go each way.

        That's not a common thing to worry about.

        You can't get "alternate" counts from the bam. If you make a vcf, the vcf is likely to have what you want in the DP4 value

        ##INFO=<ID=DP4,Number=4,Type=Integer,Description="# high-quality ref-forward bases, ref-reverse, alt-forward and alt-reverse bases">

        Comment

        • Philcolson
          Member
          • Jul 2012
          • 12

          #5
          After consulting with both you guys and a seasoned coworker, I've figured out what I needed I think. Thank you guys for the answers!

          Comment

          • bioinfo816
            Junior Member
            • Oct 2012
            • 5

            #6
            I need suggestion to extract the chromosome or chromosome region (e.g. chr1: 100,000,000-200,000,000) without sorting bam file. Any idea related with this would be appreciated.

            Comment

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