| /* |
| title: Large scale area chart |
| titleCN: 大数据量面积图 |
| category: 'line, dataZoom' |
| difficulty: 4 |
| */ |
| |
| var base = +new Date(1968, 9, 3); |
| var oneDay = 24 * 3600 * 1000; |
| var date = []; |
| |
| var data = [Math.random() * 300]; |
| |
| for (var i = 1; i < 20000; i++) { |
| var now = new Date(base += oneDay); |
| date.push([now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/')); |
| data.push(Math.round((Math.random() - 0.5) * 20 + data[i - 1])); |
| } |
| |
| option = { |
| tooltip: { |
| trigger: 'axis', |
| position: function (pt) { |
| return [pt[0], '10%']; |
| } |
| }, |
| title: { |
| left: 'center', |
| text: '大数据量面积图', |
| }, |
| toolbox: { |
| feature: { |
| dataZoom: { |
| yAxisIndex: 'none' |
| }, |
| restore: {}, |
| saveAsImage: {} |
| } |
| }, |
| xAxis: { |
| type: 'category', |
| boundaryGap: false, |
| data: date |
| }, |
| yAxis: { |
| type: 'value', |
| boundaryGap: [0, '100%'] |
| }, |
| dataZoom: [{ |
| type: 'inside', |
| start: 0, |
| end: 10 |
| }, { |
| start: 0, |
| end: 10 |
| }], |
| series: [ |
| { |
| name: '模拟数据', |
| type: 'line', |
| symbol: 'none', |
| sampling: 'lttb', |
| itemStyle: { |
| color: 'rgb(255, 70, 131)' |
| }, |
| areaStyle: { |
| color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{ |
| offset: 0, |
| color: 'rgb(255, 158, 68)' |
| }, { |
| offset: 1, |
| color: 'rgb(255, 70, 131)' |
| }]) |
| }, |
| data: data |
| } |
| ] |
| }; |