Simple quadrangulations of the sphere

Uniform simple quadrangulation with 1M faces. The colours of the faces represent closeness centrality in the dual map.

Uniform simple quadrangulation with 2M faces. The colours of the faces represent closeness centrality in the dual map.

Uniform simple quadrangulation with 4M faces. The colours of the faces represent closeness centrality in the dual map.

Uniform simple quadrangulation with 8M faces. The colours of the faces represent closeness centrality in the dual map.

Uniform simple quadrangulation with 16M faces. The colours of the faces represent closeness centrality in the dual map.