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6-brush-time-selection.html
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6-brush-time-selection.html
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<!DOCTYPE html>
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/core-js/2.6.11/core.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/7.8.7/polyfill.js"></script>
<script src="https://vega.github.io/vega/assets/promise.min.js"></script>
<script src="https://vega.github.io/vega/assets/symbol.min.js"></script>
<script src="https://vega.github.io/vega/assets/fetch.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vega@5/build-es5/vega.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vega-lite@4/build-es5/vega-lite.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vega-embed@6/build-es5/vega-embed.js"></script>
<!--D3-->
<script src="https://d3js.org/d3.v5.min.js"></script>
<!--CSS-->
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<div id="container">
<h1>Using Brush</h1>
<p>We'll use this epi curve to implement a brush/focus feature. These two are vconcatenated. This is done via the contents of <code>vconcat[0].encoding.x.scale</code> and <code>vconcat[1].selection</code></p>
<p>This got a little nuts as I combined vconcat with layer to produce a layered/vconcatenated display; what we could do to smooth this out is just layer bar/7day-average lines.</p>
<div id="vis1" class="chartdest"></div>
<hr><a href="index.html">Back to main</a>
</div>
<script type="text/javascript">
// AND WE'RE MOVING TO ONE-OFF CHART SPECS HERE:
var chartCases = {
"$schema": "https://vega.github.io/schema/vega-lite/v4.json",
"description": "Tick chart",
"width": "container",
"config": {
"bar": {
continuousBandSize: 1,
},
"background": "#FFFFFF",
"axisX": {
"domain": true,
"labels": true,
"grid": false,
"labelFontSize": 8,
"tickColor": "#000000",
"tickSize": 2,
"titleFontSize": 12
},
"axisY":
{
"domain": false,
"labels": true,
"grid": true,
"ticks": false,
"titleAngle": 0,
"titleX": 0,
"titleY": -10
},
"view": {"stroke": "transparent"} },
"data": {
"url": "https://raw.githubusercontent.com/nychealth/coronavirus-data/master/trends/data-by-day.csv"
},
"vconcat": [
{
"width": "container",
"height": 100,
"mark": {
"type": "line",
"tooltip": true,
"color": "darkblue"},
"selection": {
"brush": {"type": "interval", "encodings": ["x"]}
},
"encoding": {
"y": {"field": "CASE_COUNT_7DAY_AVG", "type": "quantitative", "title": "Cases (7-day average)"},
"x": {"field": "date_of_interest", "type": "temporal", "title": "Date"},
"tooltip": [
{"field": "date_of_interest", "title": "Date", "type": "temporal"},
{"field": "CASE_COUNT_7DAY_AVG", "title": "Case count (7-day av)"}
]
}
},
{
"layer": [
{
"height": 200,
"width": "container",
"mark": {
"type": "bar",
"tooltip": true,
"color": "lightskyblue"},
"encoding": {
"y": {"field": "CASE_COUNT_7DAY_AVG", "type": "quantitative", "title": "cases"},
"x": {"field": "date_of_interest", "type": "temporal", "title": "Date","scale": {"domain": {"selection": "brush"}}},
"tooltip": [
{"field": "date_of_interest", "title": "Date", "type": "temporal"},
{"field": "CASE_COUNT_7DAY_AVG", "title": "7-day average case count"}
]
}
},
{
"height": 200,
"width": "container",
"mark": {
"type": "bar",
"tooltip": true,
"color": "darkslateblue"},
"encoding": {
"y": {"field": "HOSP_COUNT_7DAY_AVG", "type": "quantitative", "title": null},
"x": {"field": "date_of_interest", "type": "temporal", "title": "Date","scale": {"domain": {"selection": "brush"}}},
"tooltip": [
{"field": "date_of_interest", "title": "Date", "type": "temporal"},
{"field": "CASE_COUNT_7DAY_AVG", "title": "7-day average case count"}
]
}
},
{
"height": 200,
"width": "container",
"mark": {
"type": "bar",
"tooltip": true,
"color": "darkgray"},
"encoding": {
"y": {"field": "DEATH_COUNT_7DAY_AVG", "type": "quantitative", "title": null},
"x": {"field": "date_of_interest", "type": "temporal", "title": "Date","scale": {"domain": {"selection": "brush"}}},
"tooltip": [
{"field": "date_of_interest", "title": "Date", "type": "temporal"},
{"field": "CASE_COUNT_7DAY_AVG", "title": "7-day average case count"}
]
}
}
]
},
{
"height": 150,
"width": "container",
"mark": {
"type": "bar",
"tooltip": true,
"color": "lightskyblue"
},
"encoding": {
"y": {"field": "CASE_COUNT", "type": "quantitative", "title": "Cases"},
"x": {
"field": "date_of_interest",
"type": "temporal",
"title": "Date",
"scale": {"domain": {"selection": "brush"}}
},
"tooltip": [
{"field": "date_of_interest", "title": "Date", "type": "temporal"},
{"field": "CASE_COUNT", "title": "Case count"}
]
}
},
{
"height": 150,
"width": "container",
"mark": {
"type": "bar",
"tooltip": true,
"color": "blue"
},
"encoding": {
"y": {"field": "HOSPITALIZED_COUNT", "type": "quantitative", "title": "Hospitalizations"},
"x": {
"field": "date_of_interest",
"type": "temporal",
"title": "Date",
"scale": {"domain": {"selection": "brush"}}
},
"tooltip": [
{"field": "date_of_interest", "title": "Date", "type": "temporal"},
{"field": "HOSPITALIZED_COUNT", "title": "Hospitalizations"}
]
}
},
{
"height": 150,
"width": "container",
"mark": {
"type": "bar",
"tooltip": true,
"color": "darkgray"
},
"encoding": {
"y": {"field": "DEATH_COUNT", "type": "quantitative", "title": "Deaths"},
"x": {
"field": "date_of_interest",
"type": "temporal",
"title": "Date",
"scale": {"domain": {"selection": "brush"}}
},
"tooltip": [
{"field": "date_of_interest", "title": "Date", "type": "temporal"},
{"field": "DEATH_COUNT", "title": "Deaths"}
]
}
}
]
};
vegaEmbed('#vis1', chartCases);
</script>
</body>
</html>