Demo - Spline with symbols

Spline with symbols
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$(function () {
    $('#container').highcharts({
        chart: {
            type: 'spline'
        },
        title: {
            text: 'Monthly Average Temperature'
        },
        subtitle: {
            text: 'Source: WorldClimate.com'
        },
        xAxis: {
            categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
                'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
        },
        yAxis: {
            title: {
                text: 'Temperature'
            },
            labels: {
                formatter: function () {
                    return this.value + '°';
                }
            }
        },
        tooltip: {
            crosshairs: true,
            shared: true
        },
        plotOptions: {
            spline: {
                marker: {
                    radius: 4,
                    lineColor: '#666666',
                    lineWidth: 1
                }
            }
        },
        series: [{
            name: 'Tokyo',
            marker: {
                symbol: 'square'
            },
            data: [7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, {
                y: 26.5,
                marker: {
                    symbol: 'url(http://www.highcharts.com/demo/gfx/sun.png)'
                }
            }, 23.3, 18.3, 13.9, 9.6]

        }, {
            name: 'London',
            marker: {
                symbol: 'diamond'
            },
            data: [{
                y: 3.9,
                marker: {
                    symbol: 'url(http://www.highcharts.com/demo/gfx/snow.png)'
                }
            }, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8]
        }]
    });
});
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