World countries

world_countries() supplies the bundled 1:110m world atlas as a TopoJSON source. Pass it to GeoMap and use styles={id => ({ fill: highlights[id] })} to highlight individual countries; an undefined fill inherits the map's fill. IDs are strings, including leading zeros such as 076 for Brazil and 036 for Australia.

Every feature needs an explicit ID for this callback. The accessor supplies stable local IDs for the three atlas features that lack numeric IDs. It returns a fresh copy with the atlas version and URL recorded in provenance.

The equalEarth projection fits the whole sphere. Shared TopoJSON borders are drawn once, after the country fills. The CLI includes the map elements and data accessors by default, so this example runs without imports.

TextFigure places the heading, aspect-sized map, and measured caption in a column. Only the outer design width and base typography are specified; text and spacing determine the remaining layout. fit scales the finished composition for a smaller preview without changing the map's proportions.

Compare the projection gallery, try US states, or zoom with a selected-region fit.

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geometry (10)

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World countries

World countries