Bar with negative stack

author(s): Torstein Hønsi

by Geo George

HTML

<script src="https://code.highcharts.com/highcharts.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">
        Bar chart showing german population distribution by using a mirrored
        horizontal column chart with stacking and two x-axes.
    </p>
</figure>

CSS

#container {
    height: 400px;
}

.highcharts-figure,
.highcharts-data-table table {
    min-width: 310px;
    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;
}

JavaScript

// Data gathered from http://populationpyramid.net/germany/2015/

// Age categories
var categories = [
    '0-4', '5-9', '10-14', '15-19',
    '20-24', '25-29', '30-34', '35-39', '40-44',
    '45-49', '50-54', '55-59', '60-64', '65-69',
    '70-74', '75-79', '80-84', '85-89', '90-94',
    '95-99', '100 + '
];

Highcharts.chart('container', {
    chart: {
        type: 'line'
    },
    title: {
        text: 'Population pyramid for Germany, 2018'
    },
    subtitle: {
        text: 'Source: <a href="http://populationpyramid.net/germany/2018/">Population Pyramids of the World from 1950 to 2100</a>'
    },
    accessibility: {
        point: {
            valueDescriptionFormat: '{index}. Age {xDescription}, {value}%.'
        }
    },
    xAxis: [{
        categories: categories,
        reversed: false,
        labels: {
            step: 1
        },
        accessibility: {
            description: 'Age (male)'
        }
    }, { // mirror axis on right side
        opposite: true,
        reversed: false,
        categories: categories,
        linkedTo: 0,
        labels: {
            step: 1
        },
        accessibility: {
            description: 'Age (female)'
        }
    }],
    yAxis: {
        title: {
            text: null
        },
        labels: {
            formatter: function () {
                return Math.abs(this.value) + '%';
            }
        },
        accessibility: {
            description: 'Percentage population',
            rangeDescription: 'Range: 0 to 5%'
        }
    },

    plotOptions: {
        series: {
            stacking: 'normal'
        }
    },

    tooltip: {
        formatter: function () {
            return '<b>' + this.series.name + ', age ' + this.point.category + '</b><br/>' +
                'Population: ' + Highcharts.numberFormat(Math.abs(this.point.y), 1) + '%';
        }
    },

    series: [{
        name: 'Male',
        data: [
            -2.2, -2.1, -2.2, -2.4,
            -2.7, -3.0,...