This example shows a tile grid map of China where each province is drawn as a rectangle instead of its actual geographic shape. The map is colored by electricity consumption per province from a 2015 CSV dataset, using a quantile color scale. The visualization uses `d3.geoMercator()` for projection, `geo2rect` to convert polygon geometries into rectangular tiles, and SVG paths for rendering. A toggle button animates between the tile grid and the original geographic map layout using `g2r.toggle()` and redraws with `g2r.draw()`.