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How to calculate mapping statistics from a BAM file?
One-line text comment. Unordered multiple @CO lines are allowed. The mean read depth, the breadth of coverage of the reference genome, and the proportion of the reads that mapped to the reference genome can be obtained from a BAM file using the combination of awk, and the SAMtools 1.3.1 utilities depth and flagstat.
What’s the default format for BAM in sambamba?
FORMAT must be one of sam, bam, json, or msgpack (in lowercase). Default one is SAM. Print SAM header before reads. This is always done for BAM output. Print only SAM header to STDOUT. If FORMAT is sam or bam, its text version is printed, otherwise JSON object is written.
What do the numbers on the read flag mean in sambamba?
Outputs some statistics drawn from read flags. First line contains numbers of QC-passed and QC-failed reads. Then come pairs of numbers, the former for QC-passed reads, the latter for QC-failed ones: mapped reads (plus percentage relative to the numbers from the first line) reads with ‘is_paired’ flag set paired reads which are second mates
What kind of read input do you need for bbmap?
BBMap requires read input to be fasta or fastq, compressed or raw. Paired reads can be in two files or interleaved in a single file. It cannot process both paired and unpaired reads in the same run (except by using BBWrap). The indexing phase requires fasta format only (compressed is OK).
What’s the difference between a Bam and SAM file?
This is a self-serving space that compiles some of the things I’ve learned over time, mostly about coding, bioinformatics, and statistics. A BAM file is the binary version of a SAM file, a tab-delimited text file that contains sequence alignment data.
How to calculate the mean read depth in Bam?
The mean read depth is s/c. samtools depth -a file.bam: Computes the depth at each position or region. The -a flag indicates that the depth must be calculated at all positions, including at those with zero depth.
Which is the binary version of a SAM file?
A BAM file is the binary version of a SAM file, a tab-delimited text file that contains sequence alignment data.