Part 1 of 2 posts on making a choropleth map of house sale data using d3.js and mapshaper.…
Over the past few weeks I've been dabbling with Nocode tool Bubble.io. I've played with Make, Airtable, and IFTTT before, but nothing as involved as Bubble. As a developer, Nocode holds two attractions, the promise of accelerated development, and second, the opportunity to empower non-technical colleagues. Introducing Timely Exports…
This is the 2nd post in a series about building Super Map World (SMW). SMW is a web-application featuring over 17,000 maps and map graphics. They're free and they're customisable using a map edit feature. Head over here for the first post of the series. To spend as much…
Super Map World is a site that offers over 17,000 maps and map graphics. They're colourful. They're free! And best of all, they're customisable using a map edit feature. It's one of the biggest side projects I've committed to. Over the course of the next few posts I'm going…
Last week I ran a webinar for The Data Lab Community. The aim of the webinar was to provide a hands-on introduction to D3, and cover: * What D3 is, and what it's not * Capabilities of the library * How to use 'data-bindings' to power your visualisations * How to manipulate SVG elements…
Figuring out where to start with a new programming language or framework can be challenging. Searching for advice can inundate you with long lists of prerequisites and concepts to learn. Forums will turn up tech veterans that demand newcomers "start from the ground up". The newcomers should know the fundamentals…
In this walkthrough, we look at the code behind this spinning globe graphic rendered to web canvas using D3.js. Links: * Spinning globe graphic * Code on Glitch * d3-geo documentation…
In this follow-up video, we add another method of filtering data on our doctors' practices map visualisation. If you're not too familiar with Leaflet or JavaScript in general, I recommend watching the first Leaflet.js video where we create our visualisation from scratch. You can find the complete map visualisation…
“A treaty of peace has been signed between Austria and Prussia” – the first message that was transmitted across the Atlantic via telegraph. That's the first connection that appears in this animated globe visualisation. It shows a timeline of various trans-Atlantic subsea telegraph connections starting with the first successfully laid cable…
In this video, we visualise data from a spreadsheet of doctors' practices and prescriptions adding two methods for filtering. We deal with the issue of combining the two separate filters as one has a knock-on effect on the other. NB- the data is synthetic, it's just modelled on the real…
Maps are some of the most shared and sought after forms of visualisation. In this video, I walk through an example that visualises unemployment data at the US county level. The code was updated from this bl.ocks.org v4 example to use d3.js version 7. The walkthrough touches…
This screencast shows how to code a generate fabric patterns and visualise them as shirts using SVG and D3js. The patterns are composed of images gathered from an archive of botanical watercolours held by the US Department of Agriculture. For some context about the project I've written a post about…