Communications network density
Using ArcInfo a fine 0.1 DM grid with a value of 1 for cells which contained
communications network and a value of 0 otherwise was created. This grid
was aggregated into 1, 2, 3, 5, 7, 11, 13 DM resolution grids with the
values in each cell being the sum of cells values in the fine grid. ArcView
was then used to split the higher level aggregations into the 1DM resolution
so that all the grids contained the same number of cells. The aggregations
were then weighted and summed together to produce the cell values mapped
The communications infrastructure appears to be a good indicators of where
many people live, and from the map above well known sparsely populated
regions can be identified.
The communications network density is the density of most of the transport
infrastructure including roads, railways, main passenger flight lines and
ferry routes. It does not include very small roads or telecommunications.
It would be good to have a utilities network density layer which includes
telecommunications, gas, elcetricity and water supply routes.