| /* |
| title: Scatter Nebula |
| category: scatter |
| titleCN: 大规模星云散点图 |
| difficulty: 5 |
| */ |
| |
| const dataURL = ROOT_PATH + '/data/asset/data/fake-nebula.bin'; |
| const xhr = new XMLHttpRequest(); |
| xhr.open('GET', dataURL, true); |
| xhr.responseType = 'arraybuffer'; |
| |
| myChart.showLoading(); |
| |
| xhr.onload = function (e) { |
| myChart.hideLoading(); |
| var rawData = new Float32Array(this.response); |
| |
| option = { |
| title: { |
| left: 'center', |
| text: |
| echarts.format.addCommas(Math.round(rawData.length / 2)) + ' Points', |
| subtext: 'Fake data' |
| }, |
| tooltip: {}, |
| toolbox: { |
| right: 20, |
| feature: { |
| dataZoom: {} |
| } |
| }, |
| grid: { |
| right: 70, |
| bottom: 70 |
| }, |
| xAxis: [{}], |
| yAxis: [{}], |
| dataZoom: [ |
| { |
| type: 'inside' |
| }, |
| { |
| type: 'slider', |
| showDataShadow: false, |
| handleIcon: |
| 'path://M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z', |
| handleSize: '80%' |
| }, |
| { |
| type: 'inside', |
| orient: 'vertical' |
| }, |
| { |
| type: 'slider', |
| orient: 'vertical', |
| showDataShadow: false, |
| handleIcon: |
| 'path://M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z', |
| handleSize: '80%' |
| } |
| ], |
| animation: false, |
| series: [ |
| { |
| type: 'scatter', |
| data: rawData, |
| dimensions: ['x', 'y'], |
| symbolSize: 3, |
| itemStyle: { |
| opacity: 0.4 |
| }, |
| blendMode: 'source-over', |
| large: true, |
| largeThreshold: 500 |
| } |
| ] |
| }; |
| |
| myChart.setOption(option); |
| }; |
| |
| xhr.send(); |
| |
| export {}; |