一、前言
在很多web系统中,尤其是大屏系统中,经常可以看到类似于飞机迁徙图的效果,这个在echart中也是最常用的一个效果,迁徙图既可以是一个飞机也可以是其他形状,然后有一条动态的移动轨迹来表示流向,一般都是多个点流向一个点,也可以做成一个点流向多个点,是个多对多的关系,常用来表示人口迁徙、动物迁徙、黑客攻击、病毒攻击、数据流向、产品流向等。
迁徙图和上一篇的闪烁点图类似,也需要提供三个基本要素:城市名称集合、城市经纬度集合、中心点城市经纬度,至于城市点的颜色和迁徙流向箭头的颜色,都可以单独设置,echart对每个类对象都竭尽全力的提供了各种各样的属性,只要你可以想象得到的都有,估计也是开发人员摸爬滚打从实际需求中不断完善和提炼出来的,比如颜色、位置、动作、动画、字体、大小、形状、效果、类型等,这点还是非常佩服相关的开发人员,能够不断的完善升级到今天,确实相当完美。
二、功能特点
- 同时支持闪烁点图、迁徙图、区域地图、仪表盘等。
- 可以设置标题、提示信息、背景颜色、文字颜色、线条颜色、区域颜色等各种颜色。
- 可设置城市的名称、值、经纬度 集合。
- 可设置地图的放大倍数、是否允许鼠标滚轮缩放。
- 内置世界地图、全国地图、省份地图、地区地图,可以精确到县,所有地图全部离线使用。
- 内置了各省市json数据文件转js文件功能,如有数据更新自行转换即可,支持单个文件转换和一键转换所有文件。
- 内置了从json文件或者js文件获取该区域的所有名称和经纬度信息集合的功能,可以通过该方法获取到信息用来显示。
- 依赖浏览器组件显示地图,提供的demo支持webkit、webengine、ie 三种方式加载网页。
- 拓展性极强,可以依葫芦画瓢自行增加各种精美的echarts组件,做出牛逼的效果。
- 内置的仪表盘组件提供交互功能,demo演示中包含了对应的代码。
- 函数接口友好和统一,使用简单方便,就一个类。
- 支持任意Qt版本、任意系统、任意编译器。
三、体验地址
体验地址:https://pan.baidu.com/s/1Ie1xGLv7tSL-9vfsv28w1Q 提取码: wf4f 文件名:bin_map.zip
国内站点:https://gitee.com/feiyangqingyun
国际站点:https://github.com/feiyangqingyun
四、效果图
五、相关代码
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//核心代码 QString Echarts::newChartMove( const QString ¢erCity) { int cityNameCount = cityName.count(); int cityValueCount = cityValue.count(); int cityPointCount = cityPoint.count(); if (cityNameCount != cityValueCount || cityValueCount != cityPointCount) { return "" ; } QStringList body; //添加对应的值 QStringList values; for ( int i = 0; i < cityNameCount; i++) { values << QString( "[{name: '%1', value: %2}]" ).arg(cityName.at(i)).arg(cityValue.at(i)); } //添加对应的经纬度 QStringList points; for ( int i = 0; i < cityNameCount; i++) { points << QString( "'%1':[%2]" ).arg(cityName.at(i)).arg(cityPoint.at(i)); } body << QString( " var data = [%1]" ).arg(values.join( "," )); body << QString( " var geoCoordMap = {%1};" ).arg(points.join( "," )); //找到中心城市的经纬度,默认值北京 QString toCity = "北京" ; QString toPoint = "116.46,39.92" ; int index = cityName.indexOf(centerCity); if (index >= 0) { toCity = centerCity; toPoint = cityPoint.at(index); } //转换数据 QStringList datas; datas << QString( "var convertData = function(data) {" ); datas << QString( " var res = [];" ); datas << QString( " for (var i = 0; i < data.length; i++) {" ); datas << QString( " var dataItem = data[i];" ); datas << QString( " var fromCoord = geoCoordMap[dataItem[0].name];" ); datas << QString( " var toCoord = [%1];" ).arg(toPoint); datas << QString( " if (fromCoord && toCoord) {" ); datas << QString( " res.push([{" ); datas << QString( " coord: fromCoord," ); datas << QString( " value: dataItem[0].value" ); datas << QString( " }, {" ); datas << QString( " coord: toCoord," ); datas << QString( " }]);" ); datas << QString( " }" ); datas << QString( " }" ); datas << QString( " return res;" ); datas << QString( "};" ); body << " " + datas.join( "\r\n " ); body << "" ; QStringList optionSeries; optionSeries << QString( " var series = [];" ); optionSeries << QString( " [['%1', data]].forEach(function(item, i) {" ).arg(toCity); optionSeries << QString( " console.log(item);" ); optionSeries << QString( " series.push({" ); optionSeries << QString( " type: 'lines', zlevel: 2," ); optionSeries << QString( " effect: {show: true, period: 4, trailLength: 0.02, symbol: 'arrow', symbolSize: 5,}," ); optionSeries << QString( " lineStyle: {normal: {width: 1, opacity: 1, curveness: .3, color: '%1'}}," ).arg(lineColor.name()); optionSeries << QString( " data: convertData(item[1])}, {" ); optionSeries << QString( " type: 'effectScatter', coordinateSystem: 'geo', zlevel: 2," ); optionSeries << QString( " rippleEffect: {period: 4, brushType: 'stroke', scale: 4}," ); optionSeries << QString( " label: {" ); optionSeries << QString( " normal: {" ); optionSeries << QString( " show: true, position: 'right', offset: [5, 0], fontSize: 15," ); optionSeries << QString( " formatter: function(params) {return params.data.name;}" ); optionSeries << QString( " }," ); optionSeries << QString( " emphasis: {show: true}" ); optionSeries << QString( " }," ); optionSeries << QString( " symbol: 'circle'," ); optionSeries << QString( " symbolSize: function(val) {" ); optionSeries << QString( " return 6 + val[2] * 5;" ); optionSeries << QString( " }," ); optionSeries << QString( " itemStyle: {normal: {show: false, color: '%1'}}," ).arg(areaColor.name()); optionSeries << QString( " data: item[1].map(function(dataItem) {" ); optionSeries << QString( " return {name: dataItem[0].name, value: geoCoordMap[dataItem[0].name].concat([dataItem[0].value])};" ); optionSeries << QString( " }),}," ); //被攻击点,可自行调整对应的值改变大小速度等 optionSeries << QString( " {" ); optionSeries << QString( " type: 'scatter', coordinateSystem: 'geo', zlevel: 2," ); optionSeries << QString( " rippleEffect: {period: 4, brushType: 'stroke', scale: 4}," ); optionSeries << QString( " label: {" ); optionSeries << QString( " normal: {" ); optionSeries << QString( " show: true, position: 'right'," ); optionSeries << QString( " color: '#0f0', formatter: '{b}'," ); optionSeries << QString( " textStyle: {color: '#0f0'}" ); optionSeries << QString( " }," ); optionSeries << QString( " emphasis: {show: true, color: '#f60'}" ); optionSeries << QString( " }," ); optionSeries << QString( " }" ); optionSeries << QString( " );" ); optionSeries << QString( " }" ); optionSeries << QString( " );" ); body << optionSeries.join( "\r\n" ) << "" ; QStringList optionBase = getOptionBase(); QStringList optionGeo = getOptionGeo(); QString option = QString( "%1\r\n%2\r\n series: series" ).arg(optionBase.join( "\r\n" )).arg(optionGeo.join( "\r\n" )); body << " option = {" ; body << option; body << " };" ; return newChart(body.join( "\r\n" )); } //使用代码 QStringList cityName, cityValue, cityPoint; cityName << "上海" << "北京" << "成都" << "武汉" << "厦门" << "广州" ; cityPoint << "121.48,31.22" << "116.46,39.92" << "104.06,30.67" << "114.31,30.52" << "118.1,24.46" << "113.23,23.16" ; cityValue << "1" << "0" << "0" << "0" << "0" << "0" ; echarts->setCityName(cityName); echarts->setCityPoint(cityPoint); echarts->setCityValue(cityValue); echarts->setZoom(1.0); echarts->newChartMove( "上海" ); |
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原文链接:https://qtchina.blog.csdn.net/article/details/105310274