'Set the locators and formatters to specialized versions for
symmetrical log scaling.'

def set_default_locators_and_formatters(self, axis):

    axis.set_major_locator(SymmetricalLogLocator(self.get_transform()))
    axis.set_major_formatter(LogFormatterSciNotation(self.base))
    axis.set_minor_locator(SymmetricalLogLocator(self.get_transform(), self.subs))
    axis.set_minor_formatter(NullFormatter())
