这个问题可能是由于AmChart 5的默认配置导致的。如果需要完整显示地球并聚焦家庭位置，可以尝试使用以下代码示例：

以下是完整的JavaScript代码示例：

am4core.ready(function() {
  // Create chart instance
  var chart = am4core.create("chartdiv", am4plugins_map["am4plugins_map.js"].MapChart);

  // Set map definition
  chart.geodata = am4geodata_worldLow;

  // Set projection
  chart.projection = new am4maps.projections.Orthographic();
  chart.panBehavior = "rotateLongLat";

  // Create map polygon series
  var polygonSeries = chart.series.push(new am4maps.MapPolygonSeries());
  polygonSeries.useGeodata = true;
  polygonSeries.exclude = ["AQ"];

  // Add home location marker
  var home = polygonSeries.mapPolygons.create();
  home.id = "home";
  home.fill = am4core.color("#FFFFFF");
  home.strokeWidth = 2;
  home.stroke = am4core.color("#000000");
  home.radius = 5;
  home.latitude = /*[insert home location latitude]*/;
  home.longitude = /*[insert home location longitude]*/;

  // Add zoom control
  chart.zoomControl = new am4maps.ZoomControl();

  // Add home location focus button
  var button = chart.createChild(am4core.Button);
  button.label.text = "Focus Home";
  button.align = "left";
  button.events.on("hit", function() {
    chart.goHome();
    chart.zoomToGeoPoint({ latitude: home.latitude, longitude: home.longitude }, 4000, true);
    chart.pan({ x: 0, y: 100 }, 2000);
  });
});

请注意，上面的代码示例假定您已经包括了必要的AmChart和地理数据JavaScript文件，如下所示：