example_test.go

// Copyright 2020 Gregory Petrosyan <gregory.petrosyan@gmail.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package changepoint_test

import (
	"fmt"
	"math"
	"math/rand"

	"pgregory.net/changepoint"
)

func ExampleNonParametric() {
	r := rand.New(rand.NewSource(0))

	var data []float64
	for i := 0; i < 20; i++ {
		data = append(data, math.Exp(r.NormFloat64()+1))
	}
	for i := 0; i < 60; i++ {
		data = append(data, math.Exp(r.NormFloat64()))
	}
	for i := 0; i < 20; i++ {
		data = append(data, math.Exp(r.NormFloat64()-1))
	}

	fmt.Println(changepoint.NonParametric(data, 1))

	// Output:
	// [14 78]
}