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Learn D3 in 5 days # For what we are creating in these posts d3 is way overkill and very verbose, but I need to start somewhere! These are just stepping stones into real custom visualizations that cannot be done in any other tool today. I still cannot explain how excited I am to say “I created that in d3!!!” Todays Result # Today I will be learning about d3 scales, and adding them to the bar chart that we created yesterday. Follow along as I try to create something interesting. Recall Example 3 from yesterday # maybe a few days ago…. give me a break I have a lot of other priorities In yesterdays post we created a working example of a horizontal bar chart that shows grades for a set of 5 students that are all in two classes; ‘Math’ and ‘Science’. The chart is interactive, and will switch subjects at the press of a button. Math Science --> Add Scales # One issue with that plot was that the scale was created by hand. In todays example we will let d3 take care of the scale for us. We will…

Learn D3 in 5 days # I recently subscribed to Ben Clinkinbeard’s learn D3.js in 5 days, and am currently on day 3. I read through the first 2 days, and felt fairly comfortable with selecting elements, so I did not follow along on the first two days. I probably should have, but there are only so many hours in the day. Why Learn D3 # D3 is the ubiquitous dynamic visualization library for building custom interactive visualizations on the web. It is a bit low level, and more verbose than many other libraries that build upon it, but if you want full control D3 is the way to go. I have used a few libraries built upon d3 in the past and have been very happy with the results. For now I want to start learning a bit about how d3 works. I know that learning it is going to take a long time, so I want to start working on some simple examples now in order to build my understanding so that I can learn quickly when I am ready to dive in. If I never decide I need to take the deep dive into d3, I think…