def getPhysicalMinimum(self,chn=None):
        """
        Returns the minimum physical value of signal edfsignal.

        Parameters
        ----------
        chn : int
            channel number

        Examples
        --------
        >>> import pyedflib
        >>> f = pyedflib.data.test_generator()
        >>> f.getPhysicalMinimum(0)==-1000.0
        True
        >>> f._close()
        >>> del f

        """
        if chn is not None:
            if 0 <= chn < self.signals_in_file:
                return self.physical_min(chn)
            else:
                return 0
        else:
            physMin = np.zeros(self.signals_in_file)
            for i in np.arange(self.signals_in_file):
                physMin[i] = self.physical_min(i)
            return physMin
def getPhysicalMinimum ( self , chn = None ) : if chn is not None : if 0 <= chn < self . signals_in_file : return self . physical_min ( chn ) else : return 0 else : physMin = np . zeros ( self . signals_in_file ) for i in np . arange ( self . signals_in_file ) : physMin [ i ] = self . physical_min ( i ) return physMin
Returns the minimum physical value of signal edfsignal.

        Parameters
        ----------
        chn : int
            channel number

        Examples
        --------
        >>> import pyedflib
        >>> f = pyedflib.data.test_generator()
        >>> f.getPhysicalMinimum(0)==-1000.0
        True
        >>> f._close()
        >>> del f