Sunburst Legend for empty data

by amrutaJgtp

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/sunburst.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>

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

CSS

#container {
  min-width: 310px;
  max-width: 600px;
  margin: 0 auto
}

JavaScript

Highcharts.chart('container', {
  "chart": {
    "inverted": false,
    "backgroundColor": "rgba(255,255,255,0)",
    "plotBackgroundColor": "rgba(255,255,255,0)",
    "zoomType": null,
    "resetZoomButton": {
      "theme": {
        "fill": "#ffffff",
        "stroke": "#003ce1",
        "r": 0,
        "style": {
          "color": "#003ce1",
          "cursor": "pointer",
          "fontSize": "0.714rem",
          "fontFamily": "Lucida Sans Unicode,Verdana,Helvetica,Arial"
        },
        "states": {
          "hover": {
            "fill": "#003ce1",
            "stroke": "#003ce1",
            "style": {
              "color": "#ffffff",
              "fontSize": "0.714rem",
              "fontFamily": "Lucida Sans Unicode,Verdana,Helvetica,Arial"
            }
          }
        }
      }
    },
    "type": "sunburst"
  },
  "title": {
    "text": ".",
    "style": {
      "color": "rgba(255, 255, 255, 0)",
      "fontSize": "1px"
    }
  },
  "tooltip": {
    "enabled": true,
    "shared": false,
    "borderWidth": 1,
    "borderRadius": 1,
    "backgroundColor": "#ffffff",
    "style": {
      "color": "#000000",
      "fontSize": "1rem",
      "fontFamily": "Lucida Sans Unicode,Verdana,Helvetica,Arial",
      "fontWeight": "normal",
      "fontStyle": "normal",
      "textDecoration": "none"
    },
    "crosshairs": [null, null],
    "followPointer": true
  },
  "plotOptions": {
    "sunburst": {
      "animation": {
        "duration": 700
      },
      "cursor": "pointer",
      "allowPointSelect": true,
      "showInLegend": true,
      "turboThreshold": 0,
      "stickyTracking": false,
      "events": {},
      "point": {
        "events": {}
      },
      "series": {},
      "size": "100%"
    }
  },
  "legend": {
    "enabled": true,
    "item": {},
    "borderWidth": 0,
    "layout": "horizontal",
    "eQLegendPlacement": "CHART",
    "backgroundColor": "rgba(255,255,255,0)",
    "itemStyle": {
      "color": "#000000",
      "fontSize":...