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 'portfolio'
Dec 04 2008
noncontiguous area cartograms
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 [...]
Oct 26 2007
the hydrologic dashboard: on the road to a USGS statistical viewer
This summer, I was hired by David Hart, the coastal GIS specialist for UW Sea Grant to build a dashboard for viewing streamflow statistics in the Fox/Wolf rivershed here in Wisconsin.
Given the dashboard approach, I wanted to create something very aesthetically pleasing, flexible, and easy to use. For the data display, I coded a [...]