'Enable (or disable) automatic SI prefix scaling on this axis.
When enabled, this feature automatically determines the best SI prefix
to prepend to the label units, while ensuring that axis values are scaled
accordingly.
For example, if the axis spans values from -0.1 to 0.1 and has units set
to \'V\' then the axis would display values -100 to 100
and the units would appear as \'mV\'
This feature is enabled by default, and is only available when a suffix
(unit string) is provided to display on the label.'

def enableAutoSIPrefix(self, enable=True):

    self.autoSIPrefix = enable
    self.updateAutoSIPrefix()
