dots.png

Today I was dealing with a support question related to map symbols disappearing at the edge of the map extent and while trying to test a solution I had come up with, I ended up with this image.

It's a spherical stipple field with hierarchical ordering (one of my favourite test data sets) Each point has a radius value that's inversely proportional to its rank within the hierarchy (hence bigger dots are more spaced out than smaller ones) and then I computed buffers on the NAD83 Spheroid in PostGIS (Moving the buffer computation from the WMS server to the spatial RDMBS was the solution I came up with for the problem, and while I was doing that I could do it 'properly' since PostGIS has a spheroidal buffer operator) then I displayed the whole thing in Lambert Azimuthal Equal Area.

I thought It looked rather cool.