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// Copyright ©2016 The Gonum Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package optimize_test
import (
"fmt"
"log"
"gonum.org/v1/gonum/optimize"
"gonum.org/v1/gonum/optimize/functions"
)
func ExampleMinimize() {
p := optimize.Problem{
Func: functions.ExtendedRosenbrock{}.Func,
Grad: functions.ExtendedRosenbrock{}.Grad,
}
x := []float64{1.3, 0.7, 0.8, 1.9, 1.2}
result, err := optimize.Minimize(p, x, nil, nil)
if err != nil {
log.Fatal(err)
}
if err = result.Status.Err(); err != nil {
log.Fatal(err)
}
fmt.Printf("result.Status: %v\n", result.Status)
fmt.Printf("result.X: %0.4g\n", result.X)
fmt.Printf("result.F: %0.4g\n", result.F)
fmt.Printf("result.Stats.FuncEvaluations: %d\n", result.Stats.FuncEvaluations)
// Output:
// result.Status: GradientThreshold
// result.X: [1 1 1 1 1]
// result.F: 4.98e-30
// result.Stats.FuncEvaluations: 31
}
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