以下(调用core.js, maps.js, animated.js
和上下文countryLow.js
文件渲染带有多个区域(或子行政区)多边形的地图:
var chart = am4core.create("chartdiv", am4maps.MapChart);
chart.geodata = am4geodata_franceLow;
chart.projection = new am4maps.projections.Miller();
var polygonSeries = chart.series.push(new am4maps.MapPolygonSeries());
polygonSeries.useGeodata = true;
polygonSeries.applyOnClones = true;
polygonSeries.fill = am4core.color("#a791b4");
polygonSeries.fillOpacity = 0.8;
polygonSeries.strokeOpacity = 0.3;
var regionTemplate = polygonSeries.mapPolygons.template;
regionTemplate.tooltipText = "{name}";
regionTemplate.properties.fillOpacity = 0.8;
regionTemplate.propertyFields.fill = "color";
regionTemplate.propertyFields.url = "url";
regionTemplate.columns.template.url = "http://localhost:3000/go/cities?region_id={properties.id()}"
在显示工具提示时,如何在将多边形的ID值作为参数传递给URL时使多边形可被点击?
只需在Javascript中编写zeroin代码而不是typescript,您就不会有错误;
regionTemplate.url = "http://www.amcharts.com/";
regionTemplate.adapter.add("url", function(url, target) { return url + "?id=" + target.dataItem.dataContext.id; }):
您可以使用适配器修改原始URL,例如:
regionTemplate.url = "http://www.amcharts.com/";
regionTemplate.adapter.add("url", (url, target)=>{
return url + "?id=" + target.dataItem.dataContext.id;
})
You can use placeholders in URLs.例如:
regionTemplate.url = "http://localhost:3000/go/cities?region_id={id.urlEncode()}"
演示:
https://codepen.io/team/amcharts/pen/30dc8cb2bcdef6a2d5f11d41db1e58a1