This function imports a gff3 file, as provided by NCBI.
File name of the gff3 file.
Matrix with chromosome/accession number pair.
This function imports a standard gff3 file as provided by NCBI. The gff3 files on NCBI do not have a chromosome identifier, but they use the accession ID of the chromosome instead. For that reason, on can provide a matrix (as 'chr_accessions...' on the NCBI ftp server).
A data table.