【ECharts官方示例】"北京公交路线 - 线特效" bug修正版

川长思鸟来 2022-07-16 13:10 222阅读 0赞

![20161123144817408][]

官方Demo地址： [http://echarts.baidu.com/demo.html\#lines-bmap-effect][http_echarts.baidu.com_demo.html_lines-bmap-effect]

源代码地址 ： [https://github.com/ecomfe/echarts/blob/master/test/lines-bus.html][https_github.com_ecomfe_echarts_blob_master_test_lines-bus.html]

下载下来以后不能运行。需要自己引入jquery，然后浏览器还会抛出异常`Uncaught TypeError: data.map is not a function`，解决办法官方有人提到： [https://github.com/ecomfe/echarts/issues/3821][https_github.com_ecomfe_echarts_issues_3821]

全部修复以后代码如下：

## \# lines-bmap-effect.html ##

<!DOCTYPE html>
    <html style="height: 100%">
       <head>
           <meta charset="utf-8">
       </head>
       <body style="height: 100%; margin: 0">
           <div id="container" style="height: 100%"></div>
           <script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/jquery/jquery.js"></script>
           <script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/echarts-all-3.js"></script>
           <script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/extension/dataTool.min.js"></script>
           <script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/map/js/china.js"></script>
           <script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/map/js/world.js"></script>
           <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=ZUONbpqGBsYGXNIYHicvbAbM"></script>
           <script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/extension/bmap.min.js"></script>
           <script type="text/javascript">
    var dom = document.getElementById("container");
    var myChart = echarts.init(dom);
    var app = {};
    option = null;
    app.title = '北京公交路线 - 线特效';
    
    $.getJSON('lines-bus.json', function(data) {
         
        var hStep = 300 / (data.length - 1);
        var busLines = [].concat.apply([], data.map(function (busLine, idx) {
         
            var prevPt;
            var points = [];
            for (var i = 0; i < busLine.length; i += 2) {
                var pt = [busLine[i], busLine[i + 1]];
                if (i > 0) {
                    pt = [
                        prevPt[0] + pt[0],
                        prevPt[1] + pt[1]
                    ];
                }
                prevPt = pt;
    
                points.push([pt[0] / 1e4, pt[1] / 1e4]);
            }
            return {
                coords: points,
                lineStyle: {
                    normal: {
                        color: echarts.color.modifyHSL('#5A94DF', Math.round(hStep * idx))
                    }
                }
            };
        }));
        myChart.setOption(option = {
            bmap: {
                center: [116.46, 39.92],
                zoom: 10,
                roam: true,
                mapStyle: {
                  'styleJson': [
                    {
                      'featureType': 'water',
                      'elementType': 'all',
                      'stylers': {
                        'color': '#031628'
                      }
                    },
                    {
                      'featureType': 'land',
                      'elementType': 'geometry',
                      'stylers': {
                        'color': '#000102'
                      }
                    },
                    {
                      'featureType': 'highway',
                      'elementType': 'all',
                      'stylers': {
                        'visibility': 'off'
                      }
                    },
                    {
                      'featureType': 'arterial',
                      'elementType': 'geometry.fill',
                      'stylers': {
                        'color': '#000000'
                      }
                    },
                    {
                      'featureType': 'arterial',
                      'elementType': 'geometry.stroke',
                      'stylers': {
                        'color': '#0b3d51'
                      }
                    },
                    {
                      'featureType': 'local',
                      'elementType': 'geometry',
                      'stylers': {
                        'color': '#000000'
                      }
                    },
                    {
                      'featureType': 'railway',
                      'elementType': 'geometry.fill',
                      'stylers': {
                        'color': '#000000'
                      }
                    },
                    {
                      'featureType': 'railway',
                      'elementType': 'geometry.stroke',
                      'stylers': {
                        'color': '#08304b'
                      }
                    },
                    {
                      'featureType': 'subway',
                      'elementType': 'geometry',
                      'stylers': {
                        'lightness': -70
                      }
                    },
                    {
                      'featureType': 'building',
                      'elementType': 'geometry.fill',
                      'stylers': {
                        'color': '#000000'
                      }
                    },
                    {
                      'featureType': 'all',
                      'elementType': 'labels.text.fill',
                      'stylers': {
                        'color': '#857f7f'
                      }
                    },
                    {
                      'featureType': 'all',
                      'elementType': 'labels.text.stroke',
                      'stylers': {
                        'color': '#000000'
                      }
                    },
                    {
                      'featureType': 'building',
                      'elementType': 'geometry',
                      'stylers': {
                        'color': '#022338'
                      }
                    },
                    {
                      'featureType': 'green',
                      'elementType': 'geometry',
                      'stylers': {
                        'color': '#062032'
                      }
                    },
                    {
                      'featureType': 'boundary',
                      'elementType': 'all',
                      'stylers': {
                        'color': '#465b6c'
                      }
                    },
                    {
                      'featureType': 'manmade',
                      'elementType': 'all',
                      'stylers': {
                        'color': '#022338'
                      }
                    },
                    {
                      'featureType': 'label',
                      'elementType': 'all',
                      'stylers': {
                        'visibility': 'off'
                      }
                    }
                  ]
                }
            },
            series: [{
                type: 'lines',
                coordinateSystem: 'bmap',
                polyline: true,
                data: busLines,
                silent: true,
                lineStyle: {
                    normal: {
                        // color: '#c23531',
                        // color: 'rgb(200, 35, 45)',
                        opacity: 0.2,
                        width: 1
                    }
                },
                progressiveThreshold: 500,
                progressive: 200
            }, {
                type: 'lines',
                coordinateSystem: 'bmap',
                polyline: true,
                data: busLines,
                lineStyle: {
                    normal: {
                        width: 0
                    }
                },
                effect: {
                    constantSpeed: 20,
                    show: true,
                    trailLength: 0.1,
                    symbolSize: 1.5
                },
                zlevel: 1
            }]
        });
    });;
    if (option && typeof option === "object") {
        myChart.setOption(option, true);
    }
           </script>
       </body>
    </html>

## \# lines-bus.json ##

可以在这里下载数据 : [https://raw.githubusercontent.com/ecomfe/echarts/master/test/data/lines-bus.json][https_raw.githubusercontent.com_ecomfe_echarts_master_test_data_lines-bus.json]

[20161123144817408]: /images/20220715/a9708845b82c4e07b73a97c0563ca4ea.png
[http_echarts.baidu.com_demo.html_lines-bmap-effect]: http://echarts.baidu.com/demo.html#lines-bmap-effect
[https_github.com_ecomfe_echarts_blob_master_test_lines-bus.html]: https://github.com/ecomfe/echarts/blob/master/test/lines-bus.html
[https_github.com_ecomfe_echarts_issues_3821]: https://github.com/ecomfe/echarts/issues/3821
[https_raw.githubusercontent.com_ecomfe_echarts_master_test_data_lines-bus.json]: https://raw.githubusercontent.com/ecomfe/echarts/master/test/data/lines-bus.json