Arguments
npt
The number of points used to approximate the objective function via
a quadratic approximation. The value of npt must be in the interval
$[n+2,(n+1)(n+2)/2]$ where
$n$ is the number of parameters in par. Choices that exceed
$2*n+1$ are
no
rhobeg
rhobeg and rhoend
must be set to the initial and final values of a trust
region radius, so both must be positive with
0 < rhoend < rhobeg. Typically
rhobeg should be about one tenth of th
rhoend
The smallest value of the trust region radius that is allowed.
If not defined, then
1e-6 times the value set for rhobeg will be used.
rhoend should indicate the accuracy that is required in
the final values of the var
iprint
The value of iprint should be set to 0, 1, 2 or 3,
which controls the
amount of printing. Specifically, there is no output if iprint=0 and
there is output only at the return if iprint=1. Other
maxfun
The maximum allowed number of function evaluations. If this is exceeded, the
method will terminate.