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
| 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
版权声明：本文为songhuanzhao原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。