For a while now, I’ve wanted to build geographic topology in Flash. Topology, as described in an ESRI white paper, is
a set of rules and behaviors that model how points, lines, and polygons share geometry. For example, adjacent features, such as two counties, will share a common edge.
For the applications I’ve had [...]
posts tagged 'cartograms'
Jan 13 2010
Building topology in Flash
Oct 16 2009
classed cartograms
Classification is commonplace in thematic cartography. In choropleth mapping, classification is the norm. This was not always so. The first choropleth map (created by Baron Charles Dupin in 1826) was unclassed.
According to Arthur Robinson, in his Early Thematic Mapping in the History of Cartography:
So far as we now know, the [...]
Feb 21 2009
E00Parser, an ActionScript 3 parser for the Arc/Info Export topological GIS format
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 [...]