Parliament (item) chart

author(s): Torstein Hønsi

by Rajesh Danabal

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/item-series.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>
<script src="https://code.highcharts.com/modules/accessibility.js"></script>

<figure class="highcharts-figure">
    <div id="container"></div>
    <p class="highcharts-description">
        Chart showing representatives in the German Parliament. The chart is
        using the <code>item</code> series type with a semi circle layout.
        Item charts create a number of items corresponding to the value of
        each data point.
    </p>
</figure>

CSS

.highcharts-figure, .highcharts-data-table table {
    min-width: 320px; 
    max-width: 800px;
    margin: 1em auto;
}

.highcharts-data-table table {
	font-family: Verdana, sans-serif;
	border-collapse: collapse;
	border: 1px solid #EBEBEB;
	margin: 10px auto;
	text-align: center;
	width: 100%;
	max-width: 500px;
}
.highcharts-data-table caption {
    padding: 1em 0;
    font-size: 1.2em;
    color: #555;
}
.highcharts-data-table th {
	font-weight: 600;
    padding: 0.5em;
}
.highcharts-data-table td, .highcharts-data-table th, .highcharts-data-table caption {
    padding: 0.5em;
}
.highcharts-data-table thead tr, .highcharts-data-table tr:nth-child(even) {
    background: #f8f8f8;
}
.highcharts-data-table tr:hover {
    background: #f1f7ff;
}


input[type="number"] {
	min-width: 50px;
}

JavaScript

Highcharts.chart('container', {

    chart: {
        type: 'item'
    },

    title: {
        text: 'Highcharts item chart'
    },

    subtitle: {
        text: 'Parliament visualization'
    },

    legend: {
        labelFormat: '{name} <span style="opacity: 0.4">{y}</span>'
    },

    series: [{
        name: 'Representatives',
        keys: ['name', 'y', 'color', 'label'],
        data: [
            ['The Left', 69, '#BE3075', 'DIE LINKE'],
            ['Social Democratic Party', 153, '#EB001F', 'SPD'],
            ['Alliance 90/The Greens', 67, '#64A12D', 'GRÜNE'],
            ['Free Democratic Party', 80, '#FFED00', 'FDP'],
            ['Christian Democratic Union', 200, '#000000', 'CDU'],
            ['Christian Social Union in Bavaria', 46, '#008AC5', 'CSU'],
            ['Alternative for Germany', 94, '#009EE0', 'AfD']
        ],
        dataLabels: {
            enabled: true,
            format: '{point.label}'
        },
        minSize: 20
    }]
});