Summary: Intro | A Simple Bar Chart | A Multi-Series Bar Chart
If this post was a painting, it would probably be one of Mark Ryden’s works: it seems I have just gone and done a one detailed blog post. The funny thing is that it’s about bar charts, and everything has already been said about bar charts. In fact a bar chart is a graph so simple, this post should never have been written: yet, the simpleness of a bar chart is actually it’s most dangerous trap. It’s very easy to overdo, and with so few elements it’s tempting to tweak or enhance at least some of them. So this blog post is, above all, about resistance. I will look at what – and why – constitutes as a good bar chart, what are the best practices, and how to fight the horror vacui of a simple plot. We will use D3.js and the blank canvas we have built with zero coding skills in the last post to create a reusable template of a simple bar graph, and then of a multi-series bar graph. This is part of a data visualisation with D3 series, throughout which we will create a set of graphics that can be easily re-purposed for data visualisation projects.