A lot of post boxes - with d3-hexgrid

Example of how to

• use the d3-hexgrid plugin with Canvas and
• use the additional d3-hexgrid methods .geoPolygon() and .polygonPoints() to filter out point locations beyond the desired geography.

_{More examples... Farmers Markets I: SVG • Farmers Markets II: SVG and interaction • Military disputes: SVG with clipping • Number of cities: Canvas • all examples on Observable}