[GitHub] [echarts] whp1991 commented on issue #15268: vue中使用堆叠柱状图：formatter函数中过去不到this,如何获取stack的值

[GitBox <gi...@apache.org>]

whp1991 commented on issue #15268:
URL: https://github.com/apache/echarts/issues/15268#issuecomment-872001444


   > ```
   > var xAxisData = [];
   > var data1 = [];
   > var data2 = [];
   > var data3 = [];
   > var data4 = [];
   > 
   > for (var i = 0; i < 10; i++) {
   >     xAxisData.push('Class' + i);
   >     data1.push((Math.random() * 2).toFixed(2));
   >     data2.push((Math.random() * 5).toFixed(2));
   >     data3.push((Math.random() + 0.3).toFixed(2));
   >     data4.push(Math.random().toFixed(2));
   > }
   > 
   > var emphasisStyle = {
   >     itemStyle: {
   >         shadowBlur: 10,
   >         shadowColor: 'rgba(0,0,0,0.3)'
   >     }
   > };
   > 
   > var getStackByName = (name) => {
   >     return name.split('-')[0];
   > }
   > 
   > option = {
   >     brush: {
   >         toolbox: ['rect', 'polygon', 'lineX', 'lineY', 'keep', 'clear'],
   >         xAxisIndex: 0
   >     },
   >     toolbox: {
   >         feature: {
   >             magicType: {
   >                 type: ['stack', 'tiled']
   >             },
   >             dataView: {}
   >         }
   >     },
   >     tooltip: {
   >         formatter: ({ seriesName, value }) => {
   >             return getStackByName(seriesName)  + ':' + value;
   >         },
   >     },
   >     xAxis: {
   >         data: xAxisData,
   >         name: 'X Axis',
   >         axisLine: {onZero: true},
   >         splitLine: {show: false},
   >         splitArea: {show: false}
   >     },
   >     yAxis: {},
   >     grid: {
   >         bottom: 100
   >     },
   >     series: [
   >         {
   >             name: 's1-1',
   >             type: 'bar',
   >             stack: getStackByName('s1-1'),
   >             emphasis: emphasisStyle,
   >             data: data1
   >         },
   >         {
   >             name: 's1-2',
   >             type: 'bar',
   >             stack: getStackByName('s1-2'),
   >             emphasis: emphasisStyle,
   >             data: data2
   >         },
   >         {
   >             name: 's2-1',
   >             type: 'bar',
   >             stack: getStackByName('s2-1'),
   >             emphasis: emphasisStyle,
   >             data: data3
   >         },
   >         {
   >             name: 's2-2',
   >             type: 'bar',
   >             stack: getStackByName('s2-2'),
   >             emphasis: emphasisStyle,
   >             data: data4
   >         }
   >     ]
   > };
   > 
   > myChart.on('brushSelected', renderBrushed);
   > 
   > function renderBrushed(params) {
   >     var brushed = [];
   >     var brushComponent = params.batch[0];
   > 
   >     for (var sIdx = 0; sIdx < brushComponent.selected.length; sIdx++) {
   >         var rawIndices = brushComponent.selected[sIdx].dataIndex;
   >         brushed.push('[Series ' + sIdx + '] ' + rawIndices.join(', '));
   >     }
   > 
   >     myChart.setOption({
   >         title: {
   >             backgroundColor: '#333',
   >             text: 'SELECTED DATA INDICES: \n' + brushed.join('\n'),
   >             bottom: 0,
   >             right:'10%',
   >             width: 100,
   >             textStyle: {
   >                 fontSize: 12,
   >                 color: '#fff'
   >             }
   >         }
   >     });
   > }
   > ```
   > 
   > 可以像上面的`getStackByName`函数做的那样，用一个函数或映射，把`stack`信息和`seriesName`或其他属性关联起来。
   > 
   > You can try to associate stack information with seriesName or other attributes by a map or a getter function, as what `getStackByName` function does above.
   
   Thank you for your reply, but I want to show all the information of each stack column, not the information of each item
   
   


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