.. automodule:: ecodbtaxstat
   
   :py:mod:`ecodbtaxstat` specific option
   --------------------------------------   

   .. cmdoption::  --rank=<TAXONOMIC_RANK>   
   
        The taxonomic rank at which frequencies have to be computed. 
        Possible values are:
            -  class 
            -  family 
            -  forma 
            -  genus 
            -  infraclass 
            -  infraorder 
            -  kingdom 
            -  order 
            -  parvorder 
            -  phylum 
            -  species           (default)
            -  species group 
            -  species subgroup 
            -  subclass 
            -  subfamily 
            -  subgenus 
            -  subkingdom 
            -  suborder 
            -  subphylum 
            -  subspecies 
            -  subtribe 
            -  superclass 
            -  superfamily 
            -  superkingdom 
            -  superorder 
            -  superphylum 
            -  tribe 
            -  varietas 
   