Gamma Exponents
You can set the GammaRamp of a Monitor using only an exponent that will be used to seed a new GammaRamp.
set_gamma and gamma=
To set a monitor's gamma ramp using a seed Number, use the set_gamma method:
monitor.set_gamma 3
Alternatively, you can use gamma= to achieve the same thing:
monitor.gamma = 3
set_gamma and gamma= must be called from within a run block definition.