resulyrt93 opened a new issue #12308: Hover bug on 3D Scatter when give one 
valued data
URL: https://github.com/apache/incubator-echarts/issues/12308
 
 
   Hey, when i set data as object (not directly two dimensional array) and 
object have one value, 3d scatter's on hover event is not functional.  You can 
try with below option code in [this example 
page](https://echarts.apache.org/examples/en/editor.html?c=scatter3d&gl=1&theme=dark)
 . I just get first item of current data and put it a array again.
   
           series: [{
               type: 'scatter3D',
               dimensions: [
                   config.xAxis3D,
                   config.yAxis3D,
                   config.yAxis3D,
                   config.color,
                   config.symbolSiz
               ],
               data: [data.map(function (item, idx) {
                   return [
                       item[fieldIndices[config.xAxis3D]],
                       item[fieldIndices[config.yAxis3D]],
                       item[fieldIndices[config.zAxis3D]],
                       item[fieldIndices[config.color]],
                       item[fieldIndices[config.symbolSize]],
                       idx
                   ];
               })[0]],
               symbolSize: 12,
               // symbol: 'triangle',
               itemStyle: {
                   borderWidth: 1,
                   borderColor: 'rgba(255,255,255,0.8)'
               },
               emphasis: {
                   itemStyle: {
                       color: '#fff'
                   }
               }
           }]

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