Convert gVCF into BED
This is a small tool to convert a gVCF file to BED. This is useful for extracting regions that pass a certain genotype quality threshold.
gvcf2bed is now available through pypi with: pip install gvcf2bed
- Python 3.4+
- Fix a bug for variants where GQ is not defined.
- Use cyvcf2 by default in tool. This results in a speed-up of approximately 8-10x. Existing API has not changed, and will still work with pyvcf.
- Add separate filter for non-variants, as GQ scores may have a different distribution on non-variant records than on variant records.
usage: gvcf2bed [-h] -I INPUT -O OUTPUT [-s SAMPLE] [-q QUALITY] [-nq NON_VARIANT_QUALITY] [-b] Create a BED file from a gVCF. Regions are based on a minimum genotype quality. The gVCF file must contain a GQ field in its FORMAT fields. GQ scores of non-variants records have a different distribution from the GQ score distribution of variant records. Hence, an option is provided to set a different threshold for non-variant positions. optional arguments: -h, --help show this help message and exit -I INPUT, --input INPUT Input gVCF -O OUTPUT, --output OUTPUT Output bed file -s SAMPLE, --sample SAMPLE Sample name in VCF file to use. Will default to first sample (alphabetically) if not supplied -q QUALITY, --quality QUALITY Minimum genotype quality (default 20) -nq NON_VARIANT_QUALITY, --non-variant-quality NON_VARIANT_QUALITY Minimum genotype quality for non-variant records (default 20) -b, --bedgraph Output in bedgraph mode
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