AmCharts4删除MapChart中的大陆

Question

我正在使用@amcharts/amcharts4-geodata/worldLow"创建一个简单的地图图表，但不需要南极洲。有没有办法隐藏或移除它，但以这样的方式，使地图利用南极洲留下的空间，使地图相应地调整，并使其他大陆更加突出？

初始化代码：

import * as am4maps from "@amcharts/amcharts4/maps";
import am4geodata_worldLow from "@amcharts/amcharts4-geodata/worldLow";
import am4themes_animated from "@amcharts/amcharts4/themes/animated";

let chart = am4core.create("globediv", am4maps.MapChart);

try {
    chart.geodata = am4geodata_worldLow;
} catch (e) {
  chart.raiseCriticalError(new Error("Map geodata could not be loaded."));
}

chart.projection = new am4maps.projections.Projection;
chart.panBehavior = "move";

let polygonSeries = chart.series.push(new am4maps.MapPolygonSeries());
polygonSeries.data = myData;
polygonSeries.useGeodata = true;

​

​

Answer 1

将polygonSeries中的exclude属性用作文档化的here

polygonSeries.exclude = ["AQ"];

​

let chart = am4core.create("chartdiv", am4maps.MapChart);

try {
  chart.geodata = am4geodata_worldLow;
} catch (e) {
  chart.raiseCriticalError(new Error("Map geodata could not be loaded."));
}

chart.projection = new am4maps.projections.Miller();
chart.panBehavior = "move";

let polygonSeries = chart.series.push(new am4maps.MapPolygonSeries());
polygonSeries.useGeodata = true;
polygonSeries.exclude = ["AQ"];

#chartdiv {
  width: 100%;
  height: 400px;
 }

<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/maps.js"></script>
<script src="https://cdn.amcharts.com/lib/4/geodata/worldLow.js"></script>
<div id="chartdiv"></div>

​