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 'cartograms'
Dec 04 2008
noncontiguous area cartograms
Mar 25 2008
free cartograms
I’m quite interested in cartograms, and my thesis — for which I begin user testing this week — concerns their effectiveness across varying designs. Cartograms have never been easy to make, and until recently were largely produced only in university computer science or cartography departments. Now, though, a few applications manage to free [...]
Mar 11 2008
def CreateRubberSheetCartogram
Big ups to Eric Wolf, who recently released his Python script to generate continuous, “rubber sheet” cartograms. In this case, rather than the ever-so-popular Gastner-Newman diffusion-based method (2004), Wolf uses the Dougenik, Chrisman, and Niemeyer (1985) algorithm. Of the method, the authors initially wrote,
Cartograms are controversial in part because they are difficult to [...]