Zero sum pie chart

What problem does this feature solve?

I want to show the color legends for zero sum pie chart however it plots colors equally

What does the proposed API look like?

In the new feature the chart should not show the series if the sum is zero. Instead it should continue to show the legend however for chart it should only show 1 circle.

I am looking something like this. Check the legend has color and chart is disabled circle

I tried this workaround but legend has no color.

option = {
  tooltip: {
    trigger: 'item'
  },
  legend: {
    top: '5%',
    left: 'center',
    selected : {'Search Engine (0)':false,'Direct (0)' :false}
  },
  series: [
    {
      name: 'Access From',
      type: 'pie',
      radius: ['40%', '70%'],
      avoidLabelOverlap: false,
      label: {
        show: false,
        position: 'center'
      },
      emphasis: {
        label: {
          show: true,
          fontSize: '40',
          fontWeight: 'bold'
        }
      },
      labelLine: {
        show: false
      },
      data: [
        { value: 0, name: 'Search Engine (0)' },
        { value: 0, name: 'Direct (0)' }
      ]
    }
  ]
};

[pissang]

@plainheart Yeah that’s not supposed to happen. Set the value to '-' can solve this issue.

[plainheart]

This looks like a bug. When the sum is zero, the pie is invisible and the border shouldn’t be drawn. @pissang WDYT?