notes on noncontiguous cartograms and ActionScript 3 classes for producing them
Fully contiguous cartograms have stretched and distorted borders but perfectly maintained topologies. Like the Gastner-Newman diffusion-based cartograms we see all over the place. Though all sorts of cartogram designs have been produced, those with perfect topology preservation (fully contiguous cartograms) receive the majority of [...]
posts tagged 'flash'
Dec 04 2008
noncontiguous area cartograms
Oct 21 2008
Nightingale’s roses in ActionScript 3
I’ve long been a sucker for the polar area/coxcomb/rose charts popularized by Florence Nightingale. These multivariate charts can show ordered or unordered categorical data. As noted in an Economist piece on influential information graphics,
As with today’s pie charts, the area of each wedge is proportional to the figure it stands for, but it [...]
Jun 09 2008
isolining package for ActionScript 3
A week or so back I wrote about a package I ported/modified to create the Delaunay triangulation in Flash with a few AS3 classes. As I noted there, such a triangulated irregular network (TIN) allows us to interpolate isolines — lines of constant value (aka isarithms, commonly called contours).
So, given a field of points [...]