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  • Chen-Tau Lin
    Junior Member
    • Jul 2018
    • 1

    #1

    The R-square between coverage and short variants number

    Hello, everyone

    I've called variants with 3 kinds of short variants caller to decide which one to use for calling variants.

    I generate a dot plot with coverage for X and SNP numbers for Y to see if the coverage impact the number of short variants.

    The average coverage of my 40 birds is 15.4 +-2
    I've called short variants from my 40 bam files which do recalibration 2 times with
    GATK 3.7 UnifiedGenotyper
    GATK 4.0 HaplotypeCaller
    Samtools mpileup which short variants is cut off with two times and one third the coverage of each sample

    I think the R-square is the lower the better, because the actual short variants number should not have high relation with called coverage.

    Does anyone have other opinion ?

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