Data Visualization and D3.js Newsletter Issue 159

DashingD3js.com Weekly Data Visualization and D3.js Newsletter

Hi Friends -


Welcome to issue 159 of the DashingD3js.com Weekly Newsletter.
 

Onwards to this week's links...
 

Featured
 

  • How The Mercator Projection Won The Internet
    If you want to start a fight among cartographers, ask them what their favourite map projection is...I ran a poll asking my Map Room followers what the best projection for world maps was. And because I was feeling particularly mischievous, I made sure to include both the often-reviled Mercator projection and its antithesis, the Peters projection, rounding out the list with two less controversial choices: the Winkel tripel projection used by National Geographic, and the brand-new Patterson projection announced late last year...The results of the poll were utterly unexpected: 42 percent chose the Mercator projection...
  • Line Simplification
    A simplified path generator for D3, a drop in replacement for d3.svg.line with the added ability to specify a tolerance...Based on Simplify.js a tiny high-performance JavaScript polyline simplification library by Vladimir Agafonkin, extracted from Leaflet, a JS interactive maps library by the same author...It uses a combination of Ramer-Douglas-Peucker and Radial Distance algorithms...
 

Data Visualization Reading and Videos
 

  • Art Meets Cartography: The 15,000-year History Of A River In Oregon Rendered In Data
    Geologists and cartographers have grappled with helpful ways to visually depict a river’s flow over time. In 1941, the Mississippi River Commission appointed Harold Fisk to undertake a groundbreaking effort to map the entire Lower Mississippi Valley. Three years later he produced a stunning series of 15 maps that combine over 20 different river paths obtained through historical charts and aerial photography...
  • Analysis & Design - D3 Unconference Keynote [Video]
    Tamara Munzner shares a powerful way of thinking about data visualization backed by years of research and practice. She lays out a framework and vocabulary that d3.js practitioners can start incorporating in their work immediately...
  • “Dear Data” With Giorgia Lupi And Stefanie Posavec (DS#64)
    We talk about one of our favorite projects of the year — “Dear Data” by the most fabulous tag team of data illustrators around: Giorgia Lupi and Stefanie Posavec...Their year-long project is about how “two women who switched continents get to know each other through the data they draw and send across the pond” and consists of 104 hand–drawn postcards all of which document one week of their lives...Learn all about the project — how they started it, what they learned, and how it will live on...
  • Best Of The Visualisation Web...September 2015
    At the end of each month I [Andy Kirk ] pull together a collection of links to some of the most relevant, interesting or thought-provoking web content I’ve come across during the previous month. Here’s the latest collection from September 2015...
  • Chernoff’s Faces
    Humans are bad at evaluating complex data, but we’re good at reading faces. So in 1973 Stanford statistician Herman Chernoff proposed using cartoon faces to encode information. He found that up to 18 different data dimensions can be represented in a computer-drawn face, mapping one variable to the length of the nose, another to the space between the eyes or the position of the mouth, and so on. This produces an array of faces that we can assess quickly using the brain’s natural talent for reading features...
 

D3.js Reading and Videos
 

  • See sklearn Trees With D3
    The decision trees from scikit-learn are very easy to train and predict with, but it's not easy to see the rules they learn. The code below makes it easier to see inside sklearn classification trees, enabling visualizations that look like this...
  • Commercial Visualisation With D3
    London D3.js Meetup [Video]: D3 is a fantastic and expressive way to create visualisations for data journalism, however when it comes to using D3 in a corporate environment there are additional challenges to consider. I will be looking at the barriers which stand in the way of using D3 in industry and demonstrating some of the ways we have tried to overcome these hurdles with our own software...
  • Replacing Flash With D3 And SVG
    London D3.js Meetup [Video]: Flash is now unwelcome or unsupported in most browsers. But not all of its convenience and functionality is readily replaced. For simple animated illustrations, such as those used in engineering and plant control, the combination of D3 and suitably prepared SVG layouts is an excellent substitute. This talk explains the technique...
  • Sankey Particles III
    Using particles to indicate flow between reservoirs in a sankey diagram. This time with particles moving at varying speeds and maintaining the color of the source node. You can drag the reservoirs (the rectangles) to adjust the path of the flows...
  • Lynchings By State Donut Charts
    A small multiples visualization of donut charts showing the proportion and total number of lynchings by US State and by Race from 1882-1968. Area corresponds to the number of people lynched. The data from the Archives at Tuskegee Institute...

Hope that you had a great past week and that next week is even better!

Wishing you the best, 
Sebastian Gutierrez
@DashingD3js
www.dashingd3js.com

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