scipy.optimize.fminbound#
- scipy.optimize.fminbound(func, x1, x2, args=(), xtol=1e-05, maxfun=500, full_output=0, disp=1)[source]#
Bounded minimization for scalar functions.
- Parameters
- funccallable f(x,*args)
Objective function to be minimized (must accept and return scalars).
- x1, x2float or array scalar
The optimization bounds.
- argstuple, optional
Extra arguments passed to function.
- xtolfloat, optional
The convergence tolerance.
- maxfunint, optional
Maximum number of function evaluations allowed.
- full_outputbool, optional
If True, return optional outputs.
- dispint, optional
- If non-zero, print messages.
0 : no message printing. 1 : non-convergence notification messages only. 2 : print a message on convergence too. 3 : print iteration results.
- Returns
- xoptndarray
Parameters (over given interval) which minimize the objective function.
- fvalnumber
The function value at the minimum point.
- ierrint
An error flag (0 if converged, 1 if maximum number of function calls reached).
- numfuncint
The number of function calls made.
See also
minimize_scalar
Interface to minimization algorithms for scalar univariate functions. See the ‘Bounded’ method in particular.
Notes
Finds a local minimizer of the scalar function func in the interval x1 < xopt < x2 using Brent’s method. (See
brent
for auto-bracketing.)Examples
fminbound
finds the minimum of the function in the given range. The following examples illustrate the same>>> def f(x): ... return x**2
>>> from scipy import optimize
>>> minimum = optimize.fminbound(f, -1, 2) >>> minimum 0.0 >>> minimum = optimize.fminbound(f, 1, 2) >>> minimum 1.0000059608609866