pmjhonwang edited a comment on issue #7791: (v4.0.2) Labels don't display when 
label show is programmatically set to true
URL: 
https://github.com/apache/incubator-echarts/issues/7791#issuecomment-471270713
 
 
   ```javascript
   var data = [{
       name: 'Grandpa',
       children: [{
           name: 'Uncle Leo',
           value: 15,
           children: [{
               name: 'Cousin Jack',
               value: 2
           }, {
               name: 'Cousin Mary',
               value: 5,
               children: [{
                   name: 'Jackson',
                   value: 2
               }]
           }, {
               name: 'Cousin Ben',
               value: 4
           }]
       }, {
           name: 'Aunt Jane',
           children: [{
               name: 'Cousin Kate',
               value: 4
           }]
       }, {
           name: 'Father',
           value: 10,
           children: [{
               name: 'Me',
               value: 5,
               itemStyle: {
                   color: 'red'
               }
           }, {
               name: 'Brother Peter',
               value: 1
           }]
       }]
   }, {
       name: 'Mike',
       children: [{
           name: 'Uncle Dan',
           children: [{
               name: 'Cousin Lucy',
               value: 3
           }, {
               name: 'Cousin Luck',
               value: 4,
               children: [{
                   name: 'Nephew',
                   value: 2
               }]
           }]
       }]
   }, {
       name: 'Nancy',
       children: [{
           name: 'Uncle Nike',
           children: [{
               name: 'Cousin Betty',
               value: 1
           }, {
               name: 'Cousin Jenny',
               value: 2
           }]
       }]
   }];
   
   option = {
       visualMap: {
           type: 'continuous',
           min: 0,
           max: 10,
           inRange: {
               color: ['#2D5F73', '#538EA6', '#F2D1B3', '#F2B8A2', '#F28C8C']
           }
       },
       series: {
           type: 'sunburst',
           data: data,
           radius: [0, '90%'],
          // show label when I hover
           emphasis: {
               label: {
                   show: true,
                   color: 'red'
               }
           },
          // default dont show label of sunburst
           label: {
               show: false
           }
       }
   };
   ```
   https://echarts.baidu.com/examples/editor.html?c=sunburst-visualMap
   @Ovilia 
   same issue emphasis not working
   what I want was show label when hover on
   

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