Select a country to fetch its polygon and calculate its center.
Projections & Limitations
The Visual Illusion: The map you see on your screen uses the Web Mercator projection. While great for local navigation, it wildly distorts scale near the poles (making places like Greenland and Alaska look massive). If we calculated the center based on what you see, the results would be highly inaccurate.
True Spherical Math: To solve this, our calculations ignore the flat map entirely. We use D3.js to map the country's coordinates onto a mathematically perfect 3D sphere. This allows us to calculate the true center of mass and elegantly bypass the math errors caused by countries that split across the 180° antimeridian line.
The Inscribed Circle Limitation: Finding the deepest inland point (the pole of inaccessibility) relies on casting a flat 2D grid over a shape. When a country crosses the 180° antimeridian (like the US, Russia, or Fiji), a 2D calculation sees its eastern and western territories as being separated by the entire width of the planet. Attempting to draw a continuous circle across this massive artificial gap mathematically breaks down without aggressively shifting and stitching coordinates—a process that introduces too much distortion to be reliable. Therefore, this specific method is currently disabled.