The script aims to filter features according to attribute presence (9th column). If the attribute exists, the feature is discarded. Attribute are stored in the 9th column and have this shape: tag=value /!\ Removing a level1 or level2 feature will automatically remove all linked subfeatures, and removing all children of a feature will automatically remove this feature too.

SYNOPSIS --gff infile.gff -a <tag> [ --output outfile ] --help


  • -f, --reffile, --gff or -ref

    Input GFF3 file that will be read

  • -p, --type or -l

    primary tag option, case insensitive, list. Allow to specied the feature types that will be handled. You can specified a specific feature by given its primary tag name (column 3) as: cds, Gene, MrNa You can specify directly all the feature of a particular level: level2=mRNA,ncRNA,tRNA,etc level3=CDS,exon,UTR,etc By default all feature are taking into account. fill the option by the value "all" will have the same behaviour.

  • --attribute, --att, -a

    String - Attributes tag specified will be used to filter the feature type (feature type can also be specified by the option -p). List of attribute tags must be coma separated.

  • --flip

    BOLEAN - In order to flip the test and keep features that do have the attribute and filter those without

  • -o or --output

    Output GFF file. If no output file is specified, the output will be written to STDOUT.

  • -h or --help

    Display this helpful text.