docs: def compute_from_ll(self,ll):
          """
          m.compute_from_ll(ll) -- Build motif from an inputed log-likelihood matrix
  
          (This function reverse-calculates the probability matrix and background frequencies
          that were used to construct the log-likelihood matrix)
          """
          self.ll    = ll
          self.width = len(ll)
          self._compute_bg_from_ll()
          self._compute_logP_from_ll()
          self._compute_ambig_ll()
          self._compute_bits()
          self._compute_oneletter()
          self._maxscore()