OpenLayers在地图上显示统计图，饼图线状图柱状图，修复统计图跳动的问题

 

环境介绍

openlayers	ol.js	v5.3.0
highcharts	highcharts.js	v7.0.1
jquery	jquery-3.3.1.js	v3.3.1

 

 

 

 

 

显示效果

地图放大缩小对统计图的大小无影响

以饼状图为例

1、添加地图，并渲染统计图所在的点位，

vector是渲染feature需要用的图层，一定要保证在所有图层的最前方，否则渲染的feature会被遮盖，（地图量算时由于这个问题搞了一上午）

sourcemeasure = new ol.source.vector({ wrapx: false });

    vector = new ol.layer.vector({
        source: sourcemeasure,
        style: new ol.style.style({
            fill: new ol.style.fill({
                color: 'rgba(255, 255, 0, 0.2)'
            }),
            stroke: new ol.style.stroke({
                color: '#ffcc33',
                width: 2
            }),
            image: new ol.style.circle({
                radius: 7,
                fill: new ol.style.fill({
                    color: '#ffaa33'
                })
            })
        })
    });

    map = new ol.map({
        controls: ol.control.defaults({
            attribution: false
        }),
        target: 'map',
        layers: [
            new ol.layer.tile({
                source: new ol.source.osm()
            }),
            vector
        ],
        view: new ol.view({
            projection: 'epsg:3857',
            center: ol.proj.transform([121, 37], 'epsg:4326', 'epsg:3857'),
            //center: [121, 37],
            zoom: 6
        })
    });

    drawpoint();

2、画点的方法

function drawpoint() {
    for (var i = 0; i < datapie.length; i++) {
        var d = datapie[i];
        var pt = ol.proj.transform([d.x, d.y], 'epsg:4326', 'epsg:3857');

        var point = new ol.geom.point(pt);

        var feature = new ol.feature(point);

        sourcemeasure.addfeature(feature);
    }
}

3、添加统计图

下面是原始的方法，可以显示统计图，但是初始位置不对，但是稍微拖动下地图，位置又跳到对的位置了，没找到问题，换成了后面的方法2

//方法1
//$("#addpiechart").on("click", function () {
//    clearchartoverlay();
//    for (var i = 0; i < datapie.length; i++) {
//        var d = datapie[i];
//        var pt = ol.proj.transform([d.x, d.y], 'epsg:4326', 'epsg:3857');
//        var domid = "chart" + guid();
//        $("#chart").append("<div id='" + domid + "'></div>");
//        var chart = new ol.overlay({
//            id: domid,
//            position: pt,
//            positioning: "bottom-center",
//            element: document.getelementbyid(domid),
//            offset: [0, 18],
//            stopevent: false  //overlay也支持滚珠放大缩小
//        });
//        map.addoverlay(chart);
//        addpiechart(domid, d, 100);
//        overlayid.push(domid);
//    }
//});

可能是因为对overlay的element做了设置解决的这个问题，比较玄学

//方法2 
$("#addpiechart").on("click", function () {
        clearchartoverlay();
        for (var i = 0; i < datapie.length; i++) {
            var d = datapie[i];
            var pt = ol.proj.transform([d.x, d.y], 'epsg:4326', 'epsg:3857');
            var domid = "chart" + guid();
            $("#chart").append("<div id='" + domid + "'></div>");

            addpiechart(domid, d, 100);

            var chart = new ol.overlay({
                id: domid,
                element: document.getelementbyid(domid),
                positioning: "bottom-center", //统计图和渲染点位的位置关系
                offset: [0, 18],//如果统计图相对于点位又偏移，可以通过此属性将统计图移回来
                stopevent: false  //overlay也支持滚珠放大缩小
            });
            map.addoverlay(chart);
            
            var element = chart.getelement();
            chart.setposition(pt);
            //使用下面的方法显示overlay，可避免初始位置不对，拖动一下地图跳动的问题
            $(element).popover({
                placement: 'top',
                animation: false
            });
            $(element).popover('show');
            
            overlayid.push(domid);
        }
    });

　　移除所有用来显示统计图的overlay，和饼图的方法，highcharts里很多，想要别的风格可以去看highcharts的api

/**
 * 移除统计图所使用的overlay
 * */
function clearchartoverlay() {
    for (var i = 0; i < overlayid.length; i++) {
        map.removeoverlay(map.getoverlaybyid(overlayid[i]));
    }
}

function addpiechart(domid, data, size) {
    $('#' + domid).highcharts({
        chart: {
            backgroundcolor: 'rgba(255, 255, 255, 0)',
            plotbordercolor: null,
            plotbackgroundcolor: null,
            plotbackgroundimage: null,
            plotborderwidth: null,
            plotshadow: false,
            width: size,
            height: size
        },
        tooltip: {
            pointformat: '<b>{point.percentage:.1f}%</b>'
        },
        credits: {
            enabled: false
        },
        title: {
            text: ''
        },
        plotoptions: {
            pie: {
                datalabels: {
                    enabled: false
                }
            }
        },
        series: [{
            type: 'pie',
            name: data.name,
            data: data.data
        }]
    });
}

　　4、差不多就这么多，线状图和柱状图都类似，下面是完成代码

html

@{
    viewbag.title = "statisticalchart";
    layout = "~/views/shared/_layout.cshtml";
}

@styles.render("~/content/openlayers")

<div id="map" class="map">

</div>
<div class="tool">
    <button id="addpiechart">添加饼图</button>
    <button id="addlinechart">添加线状图</button>
    <button id="addcolumnchart">添加柱状图</button>
</div>
<div style="display: none;" id="chart">
</div>

@scripts.render("~/bundles/openlayers")
<script src="~/scripts/openlayers/mapstatisticalchart.js"></script>
<script src="~/scripts/highcharts/highcharts.js"></script>
<script type="text/javascript">

    $(document).ready(function () {
        init();
    });

</script>

　　js

/*
 *地图上显示统计图
 */

//地图渲染的两个对象
var vector;
var sourcemeasure;

//x,y表示渲染的位置，如果是点图层好说，如果是面或者线，需要获取中心点
var overlayid = [];
var datapie = [{
    name: "乌鲁木齐", x: 87.5758285931, y: 43.7822116460, data: [
        {
            name: '男',
            y: 40.0,
            color: "#5ab1ef"
        }, {
            name: '女',
            y: 60.0,
            color: "#d87a80"
        }
    ]
},
{
    name: "拉萨", x: 91.1629975040, y: 29.7104204643, data: [
        {
            name: '男',
            y: 45.0,
            color: "#5ab1ef"
        }, {
            name: '女',
            y: 55.0,
            color: "#d87a80"
        }
    ]
},
{
    name: "北京", x: 116.4575803581078, y: 40.04054437977018, data: [
        {
            name: '男',
            y: 35.0,
            color: "#5ab1ef"
        }, {
            name: '女',
            y: 65.0,
            color: "#d87a80"
        }
    ]
},
{
    name: "兰州", x: 103.584297498, y: 36.1190864503, data: [
        {
            name: '男',
            y: 44.0,
            color: "#5ab1ef"
        }, {
            name: '女',
            y: 56.0,
            color: "#d87a80"
        }
    ]
}];
var map;
function init() {
    sourcemeasure = new ol.source.vector({ wrapx: false });

    vector = new ol.layer.vector({
        source: sourcemeasure,
        style: new ol.style.style({
            fill: new ol.style.fill({
                color: 'rgba(255, 255, 0, 0.2)'
            }),
            stroke: new ol.style.stroke({
                color: '#ffcc33',
                width: 2
            }),
            image: new ol.style.circle({
                radius: 7,
                fill: new ol.style.fill({
                    color: '#ffaa33'
                })
            })
        })
    });

    map = new ol.map({
        controls: ol.control.defaults({
            attribution: false
        }),
        target: 'map',
        layers: [
            new ol.layer.tile({
                source: new ol.source.osm()
            }),
            vector
        ],
        view: new ol.view({
            projection: 'epsg:3857',
            center: ol.proj.transform([121, 37], 'epsg:4326', 'epsg:3857'),
            //center: [121, 37],
            zoom: 6
        })
    });

    drawpoint();

    $("#addpiechart").on("click", function () {
        clearchartoverlay();
        for (var i = 0; i < datapie.length; i++) {
            var d = datapie[i];
            var pt = ol.proj.transform([d.x, d.y], 'epsg:4326', 'epsg:3857');
            var domid = "chart" + guid();
            $("#chart").append("<div id='" + domid + "'></div>");

            addpiechart(domid, d, 100);

            var chart = new ol.overlay({
                id: domid,
                element: document.getelementbyid(domid),
                positioning: "bottom-center",
                offset: [0, 18],
                stopevent: false  //overlay也支持滚珠放大缩小
            });
            map.addoverlay(chart);
            
            var element = chart.getelement();
            chart.setposition(pt);
            //使用下面的方法显示overlay，可避免初始位置不对，拖动一下地图跳动的问题
            $(element).popover({
                placement: 'top',
                animation: false
            });
            $(element).popover('show');
            
            overlayid.push(domid);
        }
    });

    $("#addlinechart").on("click", function () {
        clearchartoverlay();
        for (var i = 0; i < dataline.length; i++) {
            var d = dataline[i];
            var pt = ol.proj.transform([d.x, d.y], 'epsg:4326', 'epsg:3857');
            var domid = "chart" + guid();
            //$("#chart").append("<div id='" + domid + "'></div>");
            //var chart = new ol.overlay({
            //    id: domid,
            //    position: pt,
            //    positioning: "bottom-center",
            //    element: document.getelementbyid(domid),
            //    stopevent: false  //overlay也支持滚珠放大缩小
            //});
            //map.addoverlay(chart);
            //addlinechart(domid, d.data, 200, 150);
            //overlayid.push(domid);

            $("#chart").append("<div id='" + domid + "'></div>");
            var chart = new ol.overlay({
                id: domid,
                positioning: "bottom-center",
                element: document.getelementbyid(domid),
                stopevent: false  //overlay也支持滚珠放大缩小
            });
            map.addoverlay(chart);
            addlinechart(domid, d.data, 200, 150);
            

            var element = chart.getelement();
            chart.setposition(pt);
            //使用下面的方法显示overlay，可避免初始位置不对，拖动一下地图跳动的问题
            $(element).popover({
                placement: 'top',
                animation: false
            });
            $(element).popover('show');

            overlayid.push(domid);
        }
    });

    $("#addcolumnchart").on("click", function () {
        clearchartoverlay();
        for (var i = 0; i < datacolumn.length; i++) {
            var d = datacolumn[i];
            var pt = ol.proj.transform([d.x, d.y], 'epsg:4326', 'epsg:3857');
            var domid = "chart" + guid();
            $("#chart").append("<div id='" + domid + "'></div>");
            var chart = new ol.overlay({
                id: domid,
                positioning: "bottom-center",
                element: document.getelementbyid(domid),
                offset: [0, 5],
                stopevent: false  //overlay也支持滚珠放大缩小
            });
            map.addoverlay(chart);
            addcolumnchart(domid, d.data, 80, 80);

            var element = chart.getelement();
            chart.setposition(pt);
            //使用下面的方法显示overlay，可避免初始位置不对，拖动一下地图跳动的问题
            $(element).popover({
                placement: 'top',
                animation: false
            });
            $(element).popover('show');
            
            overlayid.push(domid);
        }
    });
}
/**
 * 移除统计图所使用的overlay
 * */
function clearchartoverlay() {
    for (var i = 0; i < overlayid.length; i++) {
        map.removeoverlay(map.getoverlaybyid(overlayid[i]));
    }
}

function addpiechart(domid, data, size) {
    $('#' + domid).highcharts({
        chart: {
            backgroundcolor: 'rgba(255, 255, 255, 0)',
            plotbordercolor: null,
            plotbackgroundcolor: null,
            plotbackgroundimage: null,
            plotborderwidth: null,
            plotshadow: false,
            width: size,
            height: size
        },
        tooltip: {
            pointformat: '<b>{point.percentage:.1f}%</b>'
        },
        credits: {
            enabled: false
        },
        title: {
            text: ''
        },
        plotoptions: {
            pie: {
                datalabels: {
                    enabled: false
                }
            }
        },
        series: [{
            type: 'pie',
            name: data.name,
            data: data.data
        }]
    });
}

var dataline = [{
    name: "乌鲁木齐", x: 87.5758285931, y: 43.7822116460, data: [
        {
            name: '安装，实施人员',
            series: [
                { x: 2010, y: 1234 },
                { x: 2011, y: 1234 }
            ],
            color: "#5ab1ef"
        }, {
            name: '工人',
            series: [
                { x: 2010, y: 245 },
                { x: 2011, y: 3454 }
            ],
            color: "#d87a80"
        }
    ]
},
{
    name: "拉萨", x: 91.1629975040, y: 29.7104204643, data: [
        {
            name: '安装，实施人员',
            series: [
                { x: 2010, y: 1234 },
                { x: 2011, y: 124 },
                { x: 2012, y: 0 }
            ],
            color: "#5ab1ef"
        }, {
            name: '工人',
            series: [
                { x: 2010, y: 245 },
                { x: 2011, y: 0 },
                { x: 2012, y: 3454 }
            ],
            color: "#d87a80"
        }
    ]
}];

function addlinechart(domid, data, width, height) {

    var categoriesx = [];
    var seriesvalue = [];
    for (var i = 0; i < data.length; i++) {
        var value = [];
        for (var j = 0; j < data[i].series.length; j++) {
            categoriesx.push(data[i].series[j].x);
            value.push(data[i].series[j].y);
        }

        seriesvalue.push({ "name": data[i].name, "data": value });
    }

    $('#' + domid).highcharts({
        chart: {
            backgroundcolor: 'rgba(255, 255, 255, 0.8)',
            borderradius: 20,
            plotbordercolor: null,
            plotbackgroundcolor: null,
            plotbackgroundimage: null,
            plotborderwidth: null,
            plotshadow: false,
            width: width,
            height: height
        },
        credits: {
            enabled: false
        },
        title: {
            text: ''
        },
        yaxis: {
            visible: false,
            title: {
                text: ''
            }
        },
        xaxis: {
            categories: categoriesx,
            crosshair: true
        },
        legend: {
            enabled: false
        },
        plotoptions: {
            series: {
                label: {
                    connectorallowed: false
                }
            },
            line: {
                datalabels: {
                    enabled: true,
                    formatter: function () {
                        return '<b>' + this.point.y + '</b><br>';
                    }
                }
            }
        },
        series: seriesvalue,
        responsive: {
            rules: [{
                condition: {
                    maxwidth: 500
                },
                chartoptions: {
                    legend: {
                        layout: 'horizontal',
                        align: 'center',
                        verticalalign: 'bottom'
                    }
                }
            }]
        }
    });
}

var datacolumn = [{
    name: "乌鲁木齐", x: 87.5758285931, y: 43.7822116460, data: [
        {
            name: '安装，实施人员',
            series: [
                { x: 2011, y: 1234 }
            ],
            color: "#5ab1ef"
        }, {
            name: '工人',
            series: [
                { x: 2011, y: 3454 }
            ],
            color: "#d87a80"
        }
    ]
},
{
    name: "拉萨", x: 91.1629975040, y: 29.7104204643, data: [
        {
            name: '安装，实施人员',
            series: [
                { x: 2012, y: 123 }
            ],
            color: "#5ab1ef"
        }, {
            name: '工人',
            series: [
                { x: 2012, y: 3454 }
            ],
            color: "#d87a80"
        }
    ]
}, {
    name: "北京", x: 116.4575803581078, y: 40.04054437977018, data: [
        {
            name: '安装，实施人员',
            series: [
                { x: 2014, y: 252 }
            ],
            color: "#5ab1ef"
        }, {
            name: '工人',
            series: [
                { x: 2014, y: 324 }
            ],
            color: "#d87a80"
        }
    ]
},
{
    name: "兰州", x: 103.584297498, y: 36.1190864503, data: [
        {
            name: '安装，实施人员',
            series: [
                { x: 2013, y: 2341 }
            ],
            color: "#5ab1ef"
        }, {
            name: '工人',
            series: [
                { x: 2013, y: 2341 }
            ],
            color: "#d87a80"
        }
    ]
}];

function addcolumnchart(domid, data, width, height) {

    var categoriesx = [];
    var seriesvalue = [];
    for (var i = 0; i < data.length; i++) {
        var value = [];
        for (var j = 0; j < data[i].series.length; j++) {
            categoriesx.push(data[i].series[j].x);
            value.push(data[i].series[j].y);
        }

        seriesvalue.push({ "name": data[i].name, "data": value });
    }

    $('#' + domid).highcharts({
        chart: {
            backgroundcolor: 'rgba(255, 255, 255, 0)',
            borderradius: 20,
            plotbordercolor: null,
            plotbackgroundcolor: null,
            plotbackgroundimage: null,
            plotborderwidth: null,
            plotshadow: false,
            width: width,
            height: height,
            type: 'column'
        },
        credits: {
            enabled: false
        },
        title: {
            text: ''
        },
        yaxis: {
            visible: false,
            title: {
                text: ''
            }
        },
        xaxis: {
            visible: false,
            categories: categoriesx,
            crosshair: true
        },
        legend: {
            enabled: false
        },
        plotoptions: {
            series: {
                label: {
                    connectorallowed: false
                }
            },
            line: {
                datalabels: {
                    enabled: true,
                    formatter: function () {
                        return '<b>' + this.point.y + '</b><br>';
                    }
                }
            }
        },
        series: seriesvalue,
        responsive: {
            rules: [{
                condition: {
                    maxwidth: 500
                },
                chartoptions: {
                    legend: {
                        layout: 'horizontal',
                        align: 'center',
                        verticalalign: 'bottom'
                    }
                }
            }]
        }
    });
}

function drawpoint() {
    for (var i = 0; i < datapie.length; i++) {
        var d = datapie[i];
        var pt = ol.proj.transform([d.x, d.y], 'epsg:4326', 'epsg:3857');

        var point = new ol.geom.point(pt);

        var feature = new ol.feature(point);

        sourcemeasure.addfeature(feature);
    }
}

　　引用的资料包括：https://blog.csdn.net/gisshixisheng/article/details/50926948，https://blog.csdn.net/henrystern/article/details/81149015