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highchartshighcharts-gantt

Render SVG images on each point of gantt chart in highcharts


I want to put some images as SVG on each point in Gantt chart, I've tried something like below:

function (chartt) { // on complete
            chartt.renderer.image('imageURL.png',100,100,30,30)
                .add();
}

But after running this code, the image will be shown on the corner of the page. I want to draw images on each point in the chart and set their position related to its point.

Live Demo: https://jsfiddle.net/meysamm22/x41wdu5z/


Solution

  • You need to use the right x and y attributes, calculate them based on plotX and plotY point's properties:

        function(chartt) { // on complete
            var points = chartt.series[0].points,
                width = 30,
                height = 30;
    
            points.forEach(function(point) {
                chartt.renderer.image(
                        'https://www.highcharts.com/images/employees2014/Torstein.jpg',
                        point.plotX + chartt.plotLeft + point.shapeArgs.width / 2 - width / 2,
                        point.plotY + chartt.plotTop - height / 2,
                        width,
                        height
                    )
                    .attr({
                        zIndex: 5
                    })
                    .add();
            });
        });
    

    Live demo: https://jsfiddle.net/BlackLabel/r4ph3ykz/

    API Reference: https://api.highcharts.com/class-reference/Highcharts.SVGRenderer#image