NAME

       grabix - random access on large compressed sequence data

SYNOPSIS

       grabix index bedfile.gz
       grabix grab bedfile.gz linenumber

DESCRIPTION

       In  biomedical  research  it  is  increasing  practice  to  study  the genetic basis of disease. This now
       frequently comprises the sequencing of human sequences. The output of the machine however  is  redundant,
       and  the  real sequence is the best sequence to explain the redundancy. The exchange of data happens only
       with compressed files - to huge and redundant  to  perform  otherwise.  One  should  avoid  uncompression
       whenever possible.

       grabix  leverages  the  fantastic BGZF library of the samtools package to provide random access into text
       files that have been compressed with bgzip (from tabix package). grabix creates it's own index (.gbi)  of
       the  bgzipped file. Once indexed, one can extract arbitrary lines from the file with the grab command. Or
       choose random lines with the, well, random command.

SEE ALSO

       https://github.com/arq5x/grabix

                                                  July 18, 2013                                        GRABIX(1)