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Find depth at specific position in a list of BAM files. My colleague Estelle asked: in all the BAM we sequenced, can you give me the depth at a given position ?


This program is now part of the main jvarkit tool. See jvarkit for compiling.

Usage: java -jar dist/jvarkit.jar findallcoverageatposition  [options] Files

Usage: findallcoverageatposition [options] Files
    -clip, --clip
      use clipped bases.
      Default: false
    -x, --extend
      [20190218]extend by 'x' base to try to catch close with clipped reads. A 
      distance specified as a positive integer.Commas are removed. The 
      following suffixes are interpreted : b,bp,k,kb,m,mb,g,gb
      Default: 500
    -filter, --filter
      [20171201](moved to jexl). A JEXL Expression that will be used to filter 
      out some sam-records (see 
      An expression should return a boolean value (true=exclude, false=keep 
      the read). An empty expression keeps everything. The variable 'record' 
      is the current observed read, an instance of SAMRecord (https://samtools.github.io/htsjdk/javadoc/htsjdk/htsjdk/samtools/SAMRecord.html).
      Default: record.getMappingQuality()<1 || record.getDuplicateReadFlag() || record.getReadFailsVendorQualityCheckFlag() || record.isSecondaryOrSupplementary()
    -h, --help
      print help and exit
      What kind of help. One of [usage,markdown,xml].
    -Q, --mapq
      Min mapping quality. Dicard reads having MAPQ < 'x'
      Default: 1
    -o, --out
      Output file. Optional . Default: stdout
    --groupby, --partition
      Group Reads by. Data partitioning using the SAM Read Group (see 
      https://gatkforums.broadinstitute.org/gatk/discussion/6472/ ) . It can 
      be any combination of sample, library....
      Default: sample
      Possible Values: [readgroup, sample, library, platform, center, sample_by_platform, sample_by_center, sample_by_platform_by_center, any]
    -f, --posfile
      File containing positions. if file suffix is '.bed': all positions in 
      the range will be scanned.
    -p, --position
      -p chrom:pos . Multiple separated by space. Add this chrom/position. 
      Default: []
    -r, -R, --reference
      [20171201]Indexed fasta Reference file. This file must be indexed with 
      samtools faidx and with picard/gatk CreateSequenceDictionary or samtools 
      print version and exit


See also in Biostars

Creation Date


Source code




The project is licensed under the MIT license.


Should you cite findallcoverageatposition ? https://github.com/mr-c/shouldacite/blob/master/should-I-cite-this-software.md

The current reference is:


Lindenbaum, Pierre (2015): JVarkit: java-based utilities for Bioinformatics. figshare. http://dx.doi.org/10.6084/m9.figshare.1425030


The input is a file containing a list of path to the bam.


$ find ./testdata/ -type f -name "*.bam" | \
 java -jar dist/findallcoverageatposition.jar -p rotavirus:100

#File              CHROM      POS  SAMPLE  DEPTH  M    I  D  N  S   H  P  EQ  X  Base(A)  Base(C)  Base(G)  Base(T)  Base(N)  Base(^)  Base(-)
./testdata/S4.bam  rotavirus  100  S4      126    126  0  0  0  29  0  0  0   0  5        0        0        121      0        0        0
./testdata/S1.bam  rotavirus  100  S1      317    317  1  0  0  50  0  0  0   0  27       0        1        289      0        1        0
./testdata/S2.bam  rotavirus  100  S2      311    311  0  1  0  60  0  0  0   0  29       1        0        281      0        0        1
./testdata/S3.bam  rotavirus  100  S3      446    446  1  0  0  86  0  0  0   0  39       0        1        406      0        1        0

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