Read a GFF file from NCBI genomes ftp (version 3)
a GFF file
only return genes with locus tags
number of rows to read
GFF files are available from the NCBI genomes ftp directory, ftp://ftp.ncbi.nih.gov/genomes.
GRanges with 4 elementMetadata columns: locus, feature, description and gene
name. If all rows are returned (
locus.tags=FALSE), then score, phase and tags
are included. The seqid and source are saved in metadata.
By default, the GFF file is parsed to return only features with locus_tag keys. Gene types, products and names are assigned from child records by matching Parent tags.
The function is intended to load GFF files from NCBI only. GFF files from other sources have not been tested and may not parse.
see http://www.sequenceontology.org/gff3.shtml for details about Generic Feature Format
1 2 3 4 5
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.