abc45628 opened a new issue #10391: 使用dataset时，tooltip.formatter使用通配符有问题 URL: https://github.com/apache/incubator-echarts/issues/10391 ### Version 4.2.1 ### Steps to reproduce option = { tooltip: { show: true, formatter: '系列名:{a}<br>数据名:{b}<br>数据值：{c}' }, dataset: { dimensions: ['预警类型', '预警数'], source: [['预警A', 1], ['预警B', 2]] }, xAxis: [{ type: 'value', show: false }], yAxis: [{ type: 'category' }], series: [ { type: 'bar', label: { show: true, position: 'right' }, encode: { x: '预警数', y: '预警类型', value: '预警数', seriesName:'预警类型' } } ] }; ### What is expected? tooltips应该显示 系列名：预警类型 数据名：预警A 数据值：1 ### What is actually happening? 系列名：预警类型 数据名：预警A 数据值：预警A，1 --- 没有指定encode.value时，tooltips.formatter不知道用第几个字段来显示{c}，那么可以显示成“预警A，1”。 但是指定encode.value后，应该{c}就显示成encode.value的指定值 <!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE -->
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