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@EE2dev
Created August 18, 2020 22:27
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  1. EE2dev created this gist Aug 18, 2020.
    1 change: 1 addition & 0 deletions .block
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    license: mit
    14 changes: 14 additions & 0 deletions README.md
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    Converted from : https://observablehq.com/@vega/vega-lite-api

    A very simple example of how to run the wonderful [JavaScript API for vega-lite](https://github.com/vega/vega-lite-api) directly in the browser. This one uses vegaEmbed to render the chart. The key is to use the api to generate the spec, and then vegaEmbed to render it.


    Built with [blockbuilder.org](http://blockbuilder.org)

    forked from <a href='http://bl.ocks.org/john-guerra/'>john-guerra</a>'s block: <a href='http://bl.ocks.org/john-guerra/d6f1c4fc6473f78dd1b900145f8b63df'>vega-lite JavaScript API browser example</a>

    forked from <a href='http://bl.ocks.org/john-guerra/'>john-guerra</a>'s block: <a href='http://bl.ocks.org/john-guerra/a90b26fc3c99a925b05d51a479c16af2'>vega-lite JavaScript API browser example with vegaEmbed</a>

    forked from <a href='http://bl.ocks.org/EE2dev/'>EE2dev</a>'s block: <a href='http://bl.ocks.org/EE2dev/93076c6db5ed91ba2275767ba6809476'>vega-lite JavaScript API browser example with vegaEmbed</a>

    forked from <a href='http://bl.ocks.org/EE2dev/'>EE2dev</a>'s block: <a href='http://bl.ocks.org/EE2dev/9e9bf25ead1d3d71fae033ca177ce9a9'>vega-lite JavaScript API browser example with vegaEmbed</a>
    62 changes: 62 additions & 0 deletions index.html
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    <!DOCTYPE html>
    <html lang="en">
    <head>
    <meta charset="UTF-8" />

    </head>
    <body>

    <div id="chart"></div>

    <script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>


    <script>

    const width = 900;
    const brush = vl.selectInterval().encodings('x');
    const click = vl.selectMulti().encodings('color');

    const scale = {
    domain: ['sun', 'fog', 'drizzle', 'rain', 'snow'],
    range: ['#e7ba52', '#a7a7a7', '#aec7e8', '#1f77b4', '#9467bd']
    };

    const plot1 = vl.markPoint({filled: true})
    .encode(
    vl.color().value('lightgray')
    .if(brush, vl.color().fieldN('weather').scale(scale).title('Weather')),
    vl.size().fieldQ('precipitation').scale({domain: [-1, 50], range: [10, 500]}).title('Precipitation'),
    vl.order().fieldQ('precipitation').sort('descending'),
    vl.x().timeMD('date').axis({title: 'Date', format: '%b'}),
    vl.y().fieldQ('temp_max').scale({domain: [-5, 40]}).axis({title: 'Maximum Daily Temperature (°C)'})
    )
    .width(width)
    .height(300)
    .select(brush)
    .transform(vl.filter(click));

    const plot2 = vl.markBar()
    .encode(
    vl.color().value('lightgray')
    .if(click, vl.color().fieldN('weather').scale(scale).title('Weather')),
    vl.x().count(),
    vl.y().fieldN('weather').scale({domain: scale.domain}).title('Weather')
    )
    .width(width)
    .select(click)
    .transform(vl.filter(brush));

    const chartSpec = vl.vconcat(plot1, plot2)
    .data('https://cdn.jsdelivr.net/npm/vega-datasets@1/data/seattle-weather.csv')
    .autosize({type: 'fit-x', contains: 'padding'})
    .toJSON();

    vegaEmbed("#chart", chartSpec);
    </script>

    </body>
    </html>