Default values for parameters are taken from the system.txt file
either when the parameter was defined (<P>) or when it was reassigned
for a parameter set (<PSET:?:?>?). These can be altered at the
scripting level using this function.
Arguments
- cfg
ubiquity system object
- pname
name of parameter to set
- value
value to assign
- lb
optionally change the lower bound (
NULL)- ub
optionally change the upper bound (
NULL)
Details
When performing a parameter estimation, the initial guess will be the value
specified in the system.txt file for the currently selected parameter set. The
following command can be used after the parameter set has been selected to
specify the value (VALUE) of the parameter PNAME and optionally the lower (lb)
and upper (ub) bounds:
cfg = system_set_guess(cfg, pname="PNAME", value=VALUE, lb=NULL, ub=NULL)To set the initial guess for the parameter Vc to a value of 3, the following would be used:
cfg = system_set_guess(cfg, "Vc", value=3)To specify the guess and overwrite the upper bound on Vc and set it to 5
cfg = system_set_guess(cfg, "Vc", value=3, ub=5)