I recently discovered amCharts so I'm still trying to grasp the concepts. I've made a globe map with the Orthographic projection, which shows the outlines of all the countries.

I'm hoping to find a way to include the US state map on the globe. Is there a Globe projection that would include the USA state lines? I've found the Albers USA projection but it seems that only works on the flat map.

I recently discovered amCharts so I'm still trying to grasp the concepts. I've made a globe map with the Orthographic projection, which shows the outlines of all the countries.

I'm hoping to find a way to include the US state map on the globe. Is there a Globe projection that would include the USA state lines? I've found the Albers USA projection but it seems that only works on the flat map.

• amcharts
• amcharts4
• amcharts5

• Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. – Community Bot Commented 2 days ago

1 Answer 1

I'm not sure if this is the best or only way to do it, but I followed this doc (https://www.amcharts/docs/v4/tutorials/creating-custom-maps/) and was able to figure out a solution.

I downloaded a GeoJSON file of the USA, opened it in mapshaper. to make a few tweaks to the shapes, and then saved it in a .JS file like that doc directs.

Then, I used the worldLow orthographic projection with my custom map overlaid as a MapPolygonSeries.

   // Create map instance
  let chart = am4core.create("chartdiv", am4maps.MapChart);
  
  // Set base map (worldLow)
  chart.geodata = am4geodata_worldLow;
  chart.projection = new am4maps.projections.Orthographic();

 let worldSeries = chart.series.push(new am4maps.MapPolygonSeries());
  worldSeries.useGeodata = true;

// Overlay series (Custom USA with states)
  let usaSeries = chart.series.push(new am4maps.MapPolygonSeries());
  usaSeries.geodata = am4geodata_worldUSA;  // Your custom dataset