Print LXVI

1981 population enumeration district cartogram showing the national grid.

The cartogram is based on the census counts of 129,211 enumeration districtís resident populations. Here, lines every ten kilometer along the national grid have been drawn, thicker every 100 kilometers. The lines were smoothed by ten passes of one-dimensional binomial smoothing using software written by the author on Archimedes and Sun computers.

The distortion of the London area is dramatically depicted. It is almost as if the cities are rising out of the paper. The capitalís 10,000 km2 grid square obviously contains the most people. Most distortion is seen in the areas of lowest population in the North of Scotland. If the cartogram were truly continuous no lines would cross with those to with they were originally parallel. As it is, very few do.