communicating with data
Click for interactive visualization I have created this map of every homicide in the USA using firearms for the latest year where detailed information was available. Every, that is from all the agencies that report homicides to the FBI, which is not an obligation – this is why the map lacks Florida data. In the [...]
I put together a list of some of the things I’ve done with Tableau public there. I had put the link on twitter last Friday, and I just saw the number of connections through bit.ly – never thought something posted just before the week-end could get so much attention! so thanks, twitter followers. I’m putting [...]
previous: reshaping complex arrays (4/5) Working with layouts In this final part, we’re going to look at how we can shape our data to use the protovis built-in layouts such as stacked areas, treemaps or force-directed graphs. This is not a tutorial on how to use layouts stricto sensu, and I advise anyone interested to [...]
Previous: array functions in javascript and protovis Reshaping complex arrays This really is what protovis data processing is all about. In today’s tutorial, I am going to refer extensively to protovis’s Becker’s Barley example. One reason for that is that it’s also used in the API documentation of the methods we are going to cover, [...]
Protovis, like Tableau, are based on the grammar of graphics framework. In a nutshell, in both environments, a chart designer can map visual attributes (such as x or y dimension, color, shape, etc.) to dimensions of data. The flat file which Becker’s Barley is based on can be used in Tableau public nearly as is. [...]
Previous : Multi-dimensional arrays, inheritance and hierarchy Short interlude: what can be done with arrays in javascript? Now that we have a grasp on how arrays work and how they can be used in protovis, let’s take a step back and look at some very useful methods for working with arrays in standard javascript. Sorting [...]
Previous post: simple arrays Multi-dimensional arrays, associative arrays and protovis Even for a simple chart, chances are that you’ll have more than a single series of numbers to represent. For instance, you could have labels to describe what they mean, several series, and so on and so forth. So, let’s say we want to add [...]
It all started with an extreme pie chart A few weeks back, there’s been a chart on aid who’s made the rounds of the internet: What this chart shows is that US aid is concentrated in a few countries. The article explains that this is a result of the 3D doctrine, which ties development with [...]