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