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// Copyright ©2017 The Gonum Authors. All rights reserved.
// Use of this code is governed by a BSD-style
// license that can be found in the LICENSE file.
package scalar_test
import (
"bufio"
"fmt"
"log"
"strings"
"gonum.org/v1/gonum/floats/scalar"
"gonum.org/v1/gonum/stat"
)
func ExampleParseWithNA() {
// Calculate the mean of a list of numbers
// ignoring missing values.
const data = `6
missing
4
`
var vals, weights []float64
sc := bufio.NewScanner(strings.NewReader(data))
for sc.Scan() {
v, w, err := scalar.ParseWithNA(sc.Text(), "missing")
if err != nil {
log.Fatal(err)
}
vals = append(vals, v)
weights = append(weights, w)
}
err := sc.Err()
if err != nil {
log.Fatal(err)
}
fmt.Println(stat.Mean(vals, weights))
// Output:
// 5
}
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