Draw parameter realizations from a (log10) uniform distribution
        described by the parameter bounds.  Respect Log10 transformation

        Parameters
        ----------
        num_reals : int
            number of realizations to generate

def _draw_uniform(self,num_reals=1):
        """ Draw parameter realizations from a (log10) uniform distribution
        described by the parameter bounds.  Respect Log10 transformation

        Parameters
        ----------
        num_reals : int
            number of realizations to generate

        """
        if not self.istransformed:
            self._transform()
        self.loc[:,:] = np.NaN
        self.dropna(inplace=True)
        ub = self.ubnd
        lb = self.lbnd
        for pname in self.names:
            if pname in self.adj_names:
                self.loc[:,pname] = np.random.uniform(lb[pname],
                                                      ub[pname],
                                                      size=num_reals)
            else:
                self.loc[:,pname] = np.zeros((num_reals)) + \
                                    self.pst.parameter_data.\
                                         loc[pname,"parval1"]