public/data/scatter-nebula.js

var dataURL = ROOT_PATH + 'data/asset/data/fake-nebula.bin';
var 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 = {
        backgroundColor: '#191919',
        title: {
            left: 'center',
            text: echarts.format.addCommas(Math.round(rawData.length / 2)) + ' Points',
            subtext: 'Fake data',
            textStyle: {
                color: '#eee'
            },
            subtextStyle: {
                color: '#999'
            }
        },
        tooltip: {},
        toolbox: {
            right: 20,
            iconStyle: {
                borderColor: '#eee'
            },
            feature: {
                dataZoom: {}
            }
        },
        grid: {
            right: 70,
            bottom: 70
        },
        xAxis: [{
            scalse: false,
            axisLabel: {
                color: '#ccc',
                fontSize: 16
            },
            splitLine: {
                lineStyle: {
                    color: '#555'
                }
            }
        }],
        yAxis: [{
            scalse: false,
            axisLabel: {
                color: '#ccc',
                fontSize: 16
            },
            splitLine: {
                lineStyle: {
                    color: '#555'
                }
            }
        }],
        dataZoom: [{
            type: 'inside'
        }, {
            type: 'slider',
            showDataShadow: false,
            handleIcon: '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%',
            handleStyle: {
                color: '#999',
                shadowBlur: 3,
                shadowColor: 'rgba(0, 0, 0, 0.6)',
                shadowOffsetX: 2,
                shadowOffsetY: 2
            }
        }, {
            type: 'inside',
            orient: 'vertical'
        }, {
            type: 'slider',
            orient: 'vertical',
            showDataShadow: false,
            handleIcon: '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%',
            handleStyle: {
                color: '#999',
                shadowBlur: 3,
                shadowColor: 'rgba(0, 0, 0, 0.6)',
                shadowOffsetX: 2,
                shadowOffsetY: 2
            }
        }],
        animation: false,
        series: [{
            type: 'scatter',
            data: rawData,
            dimensions: ['x', 'y'],
            symbolSize: 3,
            itemStyle: {
                color: '#128de3',
                opacity: 0.4
            },
            blendMode: 'lighter',
            large: true,
            largeThreshold: 500
        }]
    };

    myChart.setOption(option);
};

xhr.send();