fangfcg commented on issue #10681: 如何通过设置zlevel实现局部更新？ URL: https://github.com/apache/incubator-echarts/issues/10681#issuecomment-502477600 code ```javascript /*below is the original settings*/ async getFuelmap () { var res = await axios.get('http://localhost:8080/static/map.json') this.fuelmap = res.data.result.map(function (item) { return [item['j'], item['i'], item['fc'].toFixed(2)] }) var mapBox = document.getElementsByClassName('mapbox')[0] mapBox.style.width = '350px' mapBox.style.height = '350px' var fuelmapElement = document.getElementById('fuelmap') fuelmapElement.style.width = mapBox.style.width fuelmapElement.style.height = mapBox.style.height this.mapChart = echarts.init(fuelmapElement) var optionFuelmap = { title:{ text: 'map' }, tooltip: { position: 'top' }, animation: false, grid: { height: '80%', y: '10%' }, xAxis: { type: 'category', data: this.speedList, splitArea: { show: true } }, yAxis: { type: 'category', data: this.torqueList, splitArea: { show: true }, }, visualMap: [ { min: 0, max: 1, calculable: true, orient: 'horizontal', left: 'center', bottom: '15%', show: false, seriesIndex: [0], }, { left: 'right', top: '10%', dimension: 2, min: 0, max: 1, calculable: false, show: false, precision: 0.1, inRange: { symbolSize: [10,20] }, seriIndex:[1,2] } ], series: [ { name: 'map', type: 'heatmap', data: this.fuelmap, label: { show: false, normal: { show: false } }, itemStyle: { emphasis: { shadowBlur: 10, shadowColor: 'rgba(0, 0, 0, 0.5)' } } }, { name:'before', type:'scatter', color:'red', data:this.beforePoint, }, { name:'after', type:'scatter', color:'blue', data:this.afterPoint, } ] } this.mapChart.setOption(optionFuelmap) } /*below is the timer*/ setInterval(() => { this.mapChart.setOption({ series:[ { /*I don't want to refresh this plot*/ }, { name: 'before', data: [[torqueBeforePos, speedBeforePos,this.fuelBefore]] }, { name: 'after', data: [[torqueAfterPos, speedAfterPos, this.fuelAfter]] } ] }) }, 1000); ```
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