protein sequence classification using natural vector and convex hull method Transform fasta data to a list containing protein family, full sequence and domain sequence information get_info_ncbi.R; functions_get_info.R Using natural vector method, trasfer sequence data to 60-dimentional vector for each protein input_seqs.R;nv_cal.R;nv_util.R Calculate distance from each protein (60-dimentional vector) to each protein family (convex hull) dist_cal.R;function_dist_cal_domain.R