First off, why mess with such a retro format as Arc/Info Export (.e00)?– any code written for this ASCII file type in the last few years has been on how to go from e00 to pretty much anything (especially to the non-topological data format, the shapefile).
Put simply, topological information makes a lot [...]
posts tagged 'code'
Feb 21 2009
E00Parser, an ActionScript 3 parser for the Arc/Info Export topological GIS format
Dec 04 2008
noncontiguous area cartograms
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 [...]
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 [...]