Taking a blast_tbl as input this function exports
the following columns as BED file.
chromosome is defined by the blast_tbl column subject_id.
start is defined by the blast_tbl column s_start.
end is defined by the blast_tbl column s_end.
blast2bed(blast_tbl, output)a BLAST table generated with any blast_*() function.
file path or name of the output file.