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I have a large BAM file and I want to filter it by just what's defined in a bed file, and write it to a new file.

Is it possible to do this with samtools, and if so, how? Is there a better tool I could use to do this?

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    $\begingroup$ Did you look at the options for samtools view? $\endgroup$
    – swbarnes2
    Feb 20 '20 at 19:22
  • $\begingroup$ ´samtools view` has filtering options for BED files as reference. Type samtools view and check available flags. $\endgroup$
    – ATpoint
    Feb 20 '20 at 20:49
  • $\begingroup$ Hi, i.think your question needs more specific details $\endgroup$
    – M__
    Feb 20 '20 at 22:08
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Thanks to the helpful comments I figured it out:

samtools view -b -h -L bedfile.bed originalbam.bam > newbam.bam

-b = Output as bed file
-h = include header
-L = only output alignments overlapping the input bed file

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