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"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 academic and popular press attention.
Some notable exceptions are the well done animated ones by Mapping Worlds and a recent NY Times example showing electors per voter that Iâll return to later. These fully noncontiguous cartograms preserve the shapes of enumeration units perfectly, but donât even attempt to preserve any borders or adjacencies from the original map."
"Garden of Eden, 2007 by Wollle shows eight pedestals, each of which is covered with an airtight Plexiglas box. Via the internet, the latest air pollution levels in the capitals of the G8-countries are obtained. The system reproduces these levels artificially inside these boxes, each of which contains a lettuce that serves an indicator of the quality of the air inside the capsules."
Paul Hammond's SF Muni iPhone app: "If you live exactly 6 minutes from Sunset Tunnel East Portal, 8 minutes from Duboce and Church, and 10 minutes from Church Station you may find it useful too."
John F. Burns, Martial Law in Poland
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from: tecznotes links - Michal Migurski
3 Dec 2008 | 8:42am GMT
Posted 1 day, 12 hours ago
"The first official Soviet comment on events in Poland said today that they were 'an internal matter.' It described any 'different interpretation' implying Soviet manipulation as an attempt in itself to interfere in Polish affairs.
The statement, issued by the Government's press agency Tass, indicated that the Kremlin, was eager to counter charges in the West that Soviet pressure had forced the Polish authorities to impose martial law and suspend the operations of the Solidarity trade union, and the statement did not explicitly endorse the crackdown."
"We don't drive vans to produce maps.
United Maps licences professional vector map data from many sources and deploys smart algorithms to conflate vectorized base maps, and actively collects and validates relevant content from a vast spectrum of additional content sources.
United Maps generates a new generation of maps:
richly detailled,
intelligently layered,
interlinked and fully routable."
The Incredible Convenience of Mathematica Image Processing
from: tecznotes links - Michal Migurski
2 Dec 2008 | 9:23pm GMT
Posted 1 day, 23 hours ago
"It's been possible since Version 6 of Mathematica to embed images directly into lines of code, allowing such stupid code tricks as expanding a polynomial of plots.
But is this really good for anything?
As with many extremely nifty technologies, this feature of Mathematica had to wait a while before the killer app for it was discovered. And that killer app is image processing."
"In this tutorial, I will describe the required steps for setting up a multi-node Hadoop cluster using the Hadoop Distributed File System (HDFS) on Ubuntu Linux." One of these days.
More Misko Hevery on testable code, this time on avoiding global state. See also: "insanity: repeating the same thing and expecting a different result."
OPEN Lecture: Shawn Allen at CIID
from: tecznotes links - Michal Migurski
30 Nov 2008 | 7:53pm GMT
Posted 4 days, 1 hour ago
Shawn in Copenhagen on Wednesday.
Interesting: it's possible to measure total demand on the electrical grid from AC frequency skew at any regular socket, and act accordingly.
"This is a conference about the 'hard skills' that programmers and teams require to deliver high quality working software.
From writing effective unit tests to managing dependencies, and from writing reliable multi-threaded code to building robust and dependable service-oriented architectures."
"Even for a perfectly reliable system, where exactly is that threshold between using the schedule and using expectations?
How does this threshold change as a function of normal or excessive variability in operations?
What is the best way to integrate real-time data (of varying predicative quality) with realistic expectations for trip planning on-the-go?"
World Capitals in OpenStreetMap and Google Maps
from: tecznotes links - Michal Migurski
28 Nov 2008 | 7:47pm GMT
Posted 6 days, 1 hour ago
Next, next, next, next ... very interesting to see the places where OpenStreetMap's coverage beats Google's.
Getting OSM data into Silverlight, building a renderer, etc.
Page 93:
"You have to recognize that a system will degrade, and make it such that such entropy doesn't shatter the entire experience. the true success of experience design isn't how well it works when everything is operating as planned, but how well it works when things start going wrong. ... Ultimately instead of providing seamless environment, you want to provide meaningful, beautiful seams into which people can insert themselves, customizing their experience to suit their needs."
blog all dog-eared pages: implementation
from: tecznotes -
27 Nov 2008 | 11:12pm GMT
Posted 6 days, 21 hours ago
