angulartypescripthighchartsgantt-charthighcharts-gantt

how to add background color for x axis and y axis of high charts


I am trying to change background colour of the highcharts x and y axis background.

I am trying to fill color as below highlighted.

sample ganttchart


Solution

  • Unfortunately, axes objects does not have the attribute backgroundColor. As a workaround, you can create a rectangle behind the both axes using Highcharts SVGRenderer just like in the demo below.

    Example code:

      chart: {
        spacingLeft: 0,
        events: {
          render: function() {
            const chart = this,
              xAxisBox = (chart.xAxis[0].gridGroup.getBBox()),
              yAxisBox = (chart.yAxis[0].gridGroup.getBBox());
    
            if (!chart.customXaxisBackground) {
              chart.customXaxisBackground = chart.renderer.rect()
                .attr({
                  'stroke-width': 0,
                  stroke: 'orange',
                  fill: '#C7DCD8',
                  zIndex: 0
                })
                .add();
            }
    
            chart.customXaxisBackground.attr({
              x: xAxisBox.x,
              y: xAxisBox.y - chart.plotTop / 2,
              width: chart.plotWidth,
              height: chart.plotTop / 2
            })
    
            if (!chart.customYaxisBackground) {
              chart.customYaxisBackground = chart.renderer.rect()
                .attr({
                  'stroke-width': 0,
                  stroke: 'orange',
                  fill: '#C7DCD8',
                  zIndex: 0
                })
                .add();
            }
            chart.customYaxisBackground.attr({
              x: yAxisBox.x - chart.plotLeft,
              y: yAxisBox.y,
              width: chart.plotLeft,
              height: chart.plotHeight
            })
          }
    
        }
      },
    

    Demo: https://jsfiddle.net/BlackLabel/165720Lm/

    API References: https://api.highcharts.com/highcharts/chart.events.render https://api.highcharts.com/class-reference/Highcharts.SVGRenderer