Amchart：更改MapChart错误的颜色

Question

我有一个世界地图，没有颜色（默认情况下，国家/地区为灰色，海洋为白色）：

我的代码：

var container = am4core.create("concatChart", am4core.Container);
container.width = am4core.percent(100);
container.height = am4core.percent(100);

this.mapChart = container.createChild(am4maps.MapChart);
this.mapChart.geodata = am4geodata_continentsHigh;
this.mapChart.projection = new am4maps.projections.Miller();

var polygonSeries = this.mapChart.series.push(new am4maps.MapPolygonSeries());
polygonSeries.useGeodata = true;

我通过将这些行添加到我的代码中来添加了一些颜色：

this.mapChart.backgroundSeries.mapPolygons.template.polygon.fill = am4core.color("#91c2dc");
this.mapChart.backgroundSeries.mapPolygons.template.polygon.fillOpacity = 1;

polygonSeries.mapPolygons.template.fill = am4core.color("#FFFFFF");
polygonSeries.mapPolygons.template.strokeOpacity = 0;

但是实际上是错误的，好像世界地图被切掉了：

Answer 1

https://stackblitz.com/edit/am-charts-emkfjj?file=src/app/app.component.ts

我在代码中添加了更多信息。