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1
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{
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2
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"$schema": "https://vega.github.io/schema/vega/v5.json",
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3
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"width": 1200,
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4
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"height": 200,
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5
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"padding": 5,
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6
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7
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"data": [
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8
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{
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9
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"name": "table",
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10
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"url": "data.json",
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11
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"transform": [
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12
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{
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13
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"type": "formula",
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14
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"expr": "toDate(datum[\"time_stamp\"])",
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15
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"as": "dateTime"
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16
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},
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{
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"type": "timeunit",
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"field": "dateTime",
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20
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"units": ["year","month", "date", "hours"]
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21
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}
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]
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23
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},
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24
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{
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25
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"name": "table2",
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26
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"url": "data.json",
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27
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"transform": [
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{
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29
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"type": "formula",
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30
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"expr": "toDate(datum[\"time_stamp\"])",
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31
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"as": "dateTime"
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32
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},
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33
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{
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34
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"type": "timeunit",
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35
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"field": "dateTime",
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36
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"units": ["year", "month","date", "hours"]
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37
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},
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38
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{
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39
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"type": "lookup",
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40
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"from": "table",
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41
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"key": "unit0",
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42
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"fields": ["unit1"],
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43
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"as": ["obj"]
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44
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}
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45
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]
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46
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}
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47
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],
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48
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49
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"scales": [
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{
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51
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"name": "xscale",
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52
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"type": "time",
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53
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"domain": {"data": "table", "fields": ["unit0", "unit1"]},
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54
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"range": "width"
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55
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},
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56
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{
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57
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"name": "yscale",
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58
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"type": "linear",
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59
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"domain": {"data": "table", "field": "sensors[0].value"},
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60
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"nice": true,
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61
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"range": "height"
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62
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}
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63
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],
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64
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65
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"axes": [
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66
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{ "orient": "bottom", "scale": "xscale" },
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67
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{ "orient": "left", "scale": "yscale" }
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68
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],
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69
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70
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"marks": [
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71
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{
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72
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"type": "symbol",
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73
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"from": {"data":"table"},
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74
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"encode": {
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75
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"enter": {
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76
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"shape": {"value": "circle"},
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77
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"size": {"value": 10},
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78
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"x": {"scale": "xscale", "field": "dateTime"},
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79
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"y": {"scale": "yscale", "field": "sensors[0].value"},
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80
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"color": {"value": "both"},
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81
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"strokeWidth": {"value": 4}
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82
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}
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83
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}
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84
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},
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85
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{
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86
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"type": "rule",
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87
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"from": {"data":"table2"},
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88
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"encode": {
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|
89
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"enter": {
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|
90
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"x": {"scale": "xscale", "field": "unit0"},
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91
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"x2":[
|
|
92
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{
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|
93
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"test": "isValid(datum.obj)",
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94
|
"scale" : "xscale",
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|
95
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"field" : "obj.unit0"
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|
96
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},
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97
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{
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|
98
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"scale" : "xscale",
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99
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"field" : "unit0"
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|
100
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}
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|
101
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],
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|
102
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"y": {"scale": "yscale", "field": "sensors[0].value"},
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|
103
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"y2":[
|
|
104
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{
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|
105
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"test": "isValid(datum.obj)",
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|
106
|
"scale" : "yscale",
|
|
107
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"field" : "obj.sensors[0].value"
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|
108
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},
|
|
109
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{
|
|
110
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"scale" : "yscale",
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111
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"field" : "sensors[0].value"
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|
112
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}
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|
113
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]
|
|
114
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|
|
115
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|
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116
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|
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117
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},
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|
118
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"update": {
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119
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"stroke": {"value": "steelblue"},
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|
120
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"strokeWidth": {"value": 1}
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121
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},
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122
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"hover": {
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|
123
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"stroke": {"value": "red"},
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124
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"strokeWidth": {"value": 3}
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|
125
|
}
|
|
126
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}
|
|
127
|
}
|
|
128
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]
|
|
129
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|
|
130
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}
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