[GitHub] [incubator-echarts] wang-dq opened a new issue #11057: 折线图动态添加数据时，左侧不能很平滑的移动，而是闪动

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

wang-dq opened a new issue #11057: 折线图动态添加数据时，左侧不能很平滑的移动，而是闪动
URL: https://github.com/apache/incubator-echarts/issues/11057
 
 
    var myChart = echarts.init(document.getElementById('main'));
           var option = {
   		    title: {
   		        text: 'Topic'
   		    },
   		    tooltip: {
   		        trigger: 'axis'
   		    },
   		    legend: {
   		        data: ['内存使用情况', '当前数量']
   		    },
   		    toolbox: {
   		        show: true,
   		        feature: {
   		            dataView: {
   		                readOnly: false
   		            },
   		            restore: {},
   		            saveAsImage: {}
   		        }
   		    },
   		    dataZoom: {
   		        show: false,
   		        start: 0,
   		        end: 100
   		    },
   		    xAxis: [{
   		        type: 'category',
   		        boundaryGap: false,
   		        data: (function() {
   		            var now = new Date();
   		            var res = [];
   		            var len = 100;
   		            while (len--) {
   		                res.unshift(now.toLocaleTimeString().replace(/^\D*/, ''));
   		                now = new Date(now - 2000);
   		            }
   		            return res;
   		        })()
   		    }],
   		    yAxis: [{
   		        type: 'value',
   		        scale: true,
   		        name: '内存使用情况',
   		        max: 20,
   		        min: 0,
   		        boundaryGap: [0.2, 0.2]
   		    }, {
   		        type: 'value',
   		        scale: true,
   		        name: '当前数量',
   		        min: 0,
   		        boundaryGap: [0.2, 0.2]
   		    }],
   		    series: [{
   		        name: '当前数量',
   		        type: 'line',
   		        yAxisIndex: 1,
   		        itemStyle: {normal: {
   		        	color:'#ffd700', 
   		        	lineStyle:{color:'#ffd700'}  
   		        }},
   		        data: (function() {
   		            var res = [];
   		            var len = 100;
   		            while (len--) {
   		                res.push(null);
   		            }
   		            return res;
   		        })()
   		    }, {
   		        name: '内存使用情况',
   		        type: 'line',
   		        smooth:true,
   		        itemStyle: {normal: {
   		        	color:'#0099ff',
   		        	areaStyle: {type: 'default'},
   		        	lineStyle:{color:'#0099ff'}  
   		        }},
   		   
   		        data: (function() {
   		            var res = [];
   		            var len = 0;
   		            while (len < 100) {
   		                res.push(null);
   		                len++;
   		            }
   		            return res;
   		        })()
   		    }]
   		};
   		var times=[1000,2000,3000,4000,1000,2000,3000,4000,1000,2000,3000,4000];
   
   		function setData(){
   			let len=parseInt(Math.random()*10)
   			axisData = (new Date()).toLocaleTimeString().replace(/^\D*/, '');
   			var data0 = option.series[0].data;
   			var data1 = option.series[1].data;
                            //这里推出的数据跟推入的数据量是不等的
   			for (var i=0;i<(len+10);i++){
   				data0.shift();
   				data1.shift();
   
   				option.xAxis[0].data.shift();
   			}
   			for (var i=0;i<(len+10);i++){
   				data0.push(Math.round(Math.random() * 10000));
   				data1.push(Math.round(Math.random() * 20));
   				option.xAxis[0].data.push(axisData);
   			}
   			option.series[0].data=data0
   			option.series[1].data=data1
   			myChart.setOption(option);
   
   			setTimeout(()=>{
   				setData(len)
   			},times[len])	
   		}
   		
   		setTimeout(()=>{
   			setData()
   		},times[parseInt(Math.random()*10)])

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