pwSetFixedParameters(IDs, fix, showInfo) Fixes temporarily parameters.
If fix == true:
IDs: Cell array of parameter IDs which will be fixed during fitting
Also possible: 'all' all parameters (s, x0, k) are fixed
's' all scaling parameters are fixed
'x0' all start values are fixed
'k' all dynamical parameters are fixed
If fix == false:
The opposite behavior as for fix == true.
If showInfo == true information will be shown in the command
line about the currently fixed parameters.
Parameters which are already fixed are untouched, i.e. calling pwSetFixedParameters('s', true); pwSetFixedParameters('x0', true); will fix s and x0 parameters.