Work in progress towards making a hexgrid map of the uk --- draw the counties, then assign a circle to each of counties, then use force layout with collision detection to force the circles not to collide
Also draw a hexagon grid, then after force layout has finished, assinged te hexagons closest to the circle to be blue
Add in function so when you click on a colored hexagon, you are 'moving' that to a new position when you click on uncolored hexagon
collision code adapted form /mbostock/1804919, inspired by https://github.com/kristw/gridmap-layout-thailand
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