Highcharts Demo

author(s): Torstein Hønsi

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/broken-axis.js"></script>

<div id="container"></div>

CSS

#container {
    height: 400px;
}

JavaScript

/**
 * Extend the Axis.getLinePath method in order to visualize breaks with two
 * parallel slanted lines. For each break, the slanted lines are inserted into
 * the line path.
 */
Highcharts.wrap(
    Highcharts.Axis.prototype,
    'getLinePath', function (proceed, lineWidth) {
        const axis = this,
            brokenAxis = axis.brokenAxis,
            path = proceed.call(this, lineWidth),
            start = path[0];

        let x = start[1],
            y = start[2];

        (brokenAxis.breakArray || []).forEach(function (brk) {
            if (brk.to <= axis.min || brk.from >= axis.max) {
                // Skip breaks outside the view.
                return;
            }
            if (axis.horiz) {
                x = axis.toPixels(brk.from);
                path.splice(
                    1, 0,
                    ['L', x - 4, y], // stop
                    ['M', x - 9, y + 5],
                    ['L', x + 1, y - 5], // left slanted line
                    ['M', x - 1, y + 5],
                    ['L', x + 9, y - 5], // higher slanted line
                    ['M', x + 4, y]
                );
            } else {
                y = axis.toPixels(brk.from);
                path.splice(
                    1, 0,
                    ['L', x, y - 4], // stop
                    ['M', x + 5, y - 9],
                    ['L', x - 5, y + 1], // lower slanted line
                    ['M', x + 5, y - 1],
                    ['L', x - 5, y + 9], // higher slanted line
                    ['M', x, y + 4]
                );
            }
        });
        return path;
    }
);

/**
 * On top of each column, draw a zigzag line where the axis break is.
 */
function pointBreakColumn(e) {
    const point = e.point,
        brk = e.brk,
        shapeArgs = point.shapeArgs,
        x = shapeArgs.x,
        y = this.translate(brk.from, 0, 1, 0, 1),
        w = shapeArgs.width,
        key = ['brk', brk.from, brk.to],
        path = [
            'M', x,...