summaryrefslogtreecommitdiff
path: root/bookpipeline/graph.go
blob: a4fdee06e36cd3f844a6877c15cc50c4a9e1c6bf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
package bookpipeline

import (
	"fmt"
	"io"
	"path/filepath"
	"sort"
	"strconv"
	"strings"

	"github.com/wcharczuk/go-chart"
)

const maxticks = 20
const cutoff = 70

type Conf struct {
        Path, Code string
        Conf float64
}

type GraphConf struct {
	Pgnum, Conf float64
}

func Graph(confs map[string]*Conf, bookname string, w io.Writer) (error) {
	// Organise confs to sort them by page
	var graphconf []GraphConf
	for _, conf := range confs {
		name := filepath.Base(conf.Path)
		numend := strings.Index(name, "_")
		pgnum, err := strconv.ParseFloat(name[0:numend], 64)
		if err != nil {
			continue
		}
		var c GraphConf
		c.Pgnum = pgnum
		c.Conf = conf.Conf
		graphconf = append(graphconf, c)
	}
	sort.Slice(graphconf, func(i, j int) bool { return graphconf[i].Pgnum < graphconf[j].Pgnum })

	// Create main xvalues and yvalues, annotations and ticks
	var xvalues, yvalues []float64
	var annotations []chart.Value2
	var ticks []chart.Tick
	i := 0
	tickevery := len(graphconf) / maxticks
	for _, c := range graphconf {
		i = i + 1
		xvalues = append(xvalues, c.Pgnum)
		yvalues = append(yvalues, c.Conf)
		if c.Conf < cutoff {
			annotations = append(annotations, chart.Value2{Label: fmt.Sprintf("%.0f", c.Pgnum), XValue: c.Pgnum, YValue: c.Conf})
		}
		if tickevery % i == 0 {
			ticks = append(ticks, chart.Tick{c.Pgnum, fmt.Sprintf("%.0f", c.Pgnum)})
		}
	}
	mainSeries := chart.ContinuousSeries{
		XValues: xvalues,
		YValues: yvalues,
	}

	// Create 70% line
	yvalues = []float64{}
	for _ = range xvalues {
		yvalues = append(yvalues, cutoff)
	}
	cutoffSeries := chart.ContinuousSeries{
		XValues: xvalues,
		YValues: yvalues,
		Style: chart.Style{
			Show:            true,
			StrokeColor:     chart.ColorAlternateGreen,
			StrokeDashArray: []float64{10.0, 5.0},
		},
	}

	// Create lines marking top and bottom 10% confidence
	sort.Slice(graphconf, func(i, j int) bool { return graphconf[i].Conf < graphconf[j].Conf })
	lowconf := graphconf[int(len(graphconf) / 10)].Conf
	highconf := graphconf[int((len(graphconf) / 10) * 9)].Conf
	yvalues = []float64{}
	for _ = range graphconf {
		yvalues = append(yvalues, lowconf)
	}
	minSeries := &chart.ContinuousSeries{
		Style: chart.Style{
			Show:            true,
			StrokeColor:     chart.ColorAlternateGray,
			StrokeDashArray: []float64{5.0, 5.0},
		},
		XValues: xvalues,
		YValues: yvalues,
	}
	yvalues = []float64{}
	for _ = range graphconf {
		yvalues = append(yvalues, highconf)
	}
	maxSeries := &chart.ContinuousSeries{
		Style: chart.Style{
			Show:            true,
			StrokeColor:     chart.ColorAlternateGray,
			StrokeDashArray: []float64{5.0, 5.0},
		},
		XValues: xvalues,
		YValues: yvalues,
	}

	graph := chart.Chart{
		Title: bookname,
		TitleStyle: chart.StyleShow(),
		Width: 1920,
		Height: 1080,
		XAxis: chart.XAxis{
			Name: "Page number",
			NameStyle: chart.StyleShow(),
			Style: chart.StyleShow(),
			Range: &chart.ContinuousRange{
				Min: 0.0,
			},
			Ticks: ticks,
		},
		YAxis: chart.YAxis{
			Name: "Confidence",
			NameStyle: chart.StyleShow(),
			Style: chart.StyleShow(),
			Range: &chart.ContinuousRange{
				Min: 0.0,
				Max: 100.0,
			},
		},
		Series: []chart.Series{
			mainSeries,
			minSeries,
			maxSeries,
			cutoffSeries,
			chart.AnnotationSeries{
				Annotations: annotations,
			},
		},
	}
	return graph.Render(chart.PNG, w)
}