test/lazyUpdate.html

<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->

<html>
    <head>
        <meta charset="utf-8">
        <script src="lib/simpleRequire.js"></script>
        <script src="lib/config.js"></script>
        <link rel="stylesheet" href="lib/reset.css">
    </head>
    <body>
        <style>
        </style>
        <div id="main"></div>

        <script>

            // Schema:
            // date,AQIindex,PM2.5,PM10,CO,NO2,SO2
            var schema = [
                {name: 'date', index: 0, text: '日期'},
                {name: 'AQIindex', index: 1, text: 'AQI指数'},
                {name: 'PM25', index: 2, text: 'PM2.5'},
                {name: 'PM10', index: 3, text: 'PM10'},
                {name: 'CO', index: 4, text: '一氧化碳 (CO)'},
                {name: 'NO2', index: 5, text: '二氧化氮 (NO2)'},
                {name: 'SO2', index: 6, text: '二氧化硫 (SO2)'}
            ];

            require([
                'data/aqi/BJdata',
                'data/aqi/GZdata',
                'data/aqi/SHdata',
                'echarts'
            ], function (dataBJ, dataGZ, dataSH, echarts) {

                var chart = echarts.init(document.getElementById('main'));

                var dimSize = 6;
                var nameList = ['北京', '广州', '上海'];

                var color = ['#5793f3', '#d14a61', '#fd9c35'];

                function update(isLazy) {
                    var idx = 0;
                    var axisPointerLinkList = [];
                    var axisPointerLinkMap = {};
                    for (var i = 1; i < dimSize; i++) {
                        for (var j = 1; j < dimSize; j++) {
                            var id = i + '-' + j;

                            var linkItem = axisPointerLinkMap['x' + i];
                            if (!linkItem) {
                                linkItem = axisPointerLinkMap['x' + i] = {xAxisId: []};
                                axisPointerLinkList.push(linkItem);
                            }
                            linkItem.xAxisId.push(id);

                            var linkItem = axisPointerLinkMap['y' + j];
                            if (!linkItem) {
                                linkItem = axisPointerLinkMap['y' + j] = {yAxisId: []};
                                axisPointerLinkList.push(linkItem);
                            }
                            linkItem.yAxisId.push(id);

                            chart.setOption({
                                tooltip: {
                                    trigger: 'none'
                                },
                                axisPointer: {
                                    show: true,
                                    snap: true,
                                    lineStyle: {
                                        type: 'dashed'
                                    },
                                    link: axisPointerLinkList
                                },
                                grid: [{
                                    id: id,
                                    left: ((i - 1) / dimSize * 100 + 7) + '%',
                                    top: ((j - 1) / dimSize * 100 + 7) + '%',
                                    width: '15%',
                                    height: '15%'
                                }],
                                xAxis: [{
                                    id: id,
                                    gridId: id,
                                    // gridIndex: idx,
                                    axisLabel: {
                                        show: j === dimSize - 1
                                    },
                                    axisTick: {
                                        show: j === dimSize - 1
                                    },
                                    name: j === dimSize - 1 ? schema[i].text : '',
                                    nameLocation: 'middle',
                                    nameGap: 30,
                                    splitNumber: 3
                                }],
                                yAxis: [{
                                    id: id,
                                    gridId: id,
                                    // gridIndex: idx,
                                    axisLabel: {
                                        show: i === 1
                                    },
                                    axisTick: {
                                        show: i === 1
                                    },
                                    name: i === 1 ? schema[j].text : '',
                                    nameLocation: 'middle',
                                    nameGap: 30,
                                    splitNumber: 4
                                }],
                                series: [dataBJ, dataGZ, dataSH].map(function (data, dataIdx) {
                                    return {
                                        id: id + '-' + dataIdx,
                                        hoverAnimation: false,
                                        name: nameList[dataIdx],
                                        type: 'scatter',
                                        xAxisId: id,
                                        yAxisId: id,
                                        // xAxisIndex: idx,
                                        // yAxisIndex: idx,
                                        data: data.map(function (item) {
                                            return [item[i], item[j]];
                                        }),
                                        itemStyle: {
                                            normal: {
                                                color: color[dataIdx]
                                            }
                                        }
                                    };
                                })
                            }, false, isLazy);

                            idx++;
                        }
                    }
                }

                // console.time('update immediate');
                // update(false);
                // console.timeEnd('update immediate');

                // chart.clear();

                setTimeout(function () {
                    console.time('update lazy');
                    update(true);
                    console.timeEnd('update lazy');
                }, 200);
            });

        </script>
    </body>
</html>