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HomeSoftware EngineeringDesigning the Octoverse: A GitHub Knowledge Visualization Case Examine

Designing the Octoverse: A GitHub Knowledge Visualization Case Examine

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Final yr I collaborated with GitHub to design the 2021 State of the Octoverse report. GitHub’s Octoverse analyzes real-world knowledge from hundreds of thousands of builders and repositories so as to current the yr’s software program growth trade insights. The 2021 report covers three main traits: bettering efficiency and well-being by creating code, creating documentation, and supporting communities in a wiser, extra sustainable manner.

Because the challenge’s inventive liaison, it was my job to help the GitHub workforce in making the data-heavy report straightforward to know. Utilizing knowledge visualization, I designed 20+ charts, maps, and graphs to assist readers unravel the data that GitHub knowledge scientists collected.

On this knowledge visualization case examine, I clarify my design course of, showcase the web site I helped to create for GitHub’s Octoverse, and share key learnings from the challenge.

Designing Participating Digital Experiences With Knowledge Visualization

State of the Octoverse 2021 is a sprawling report, with knowledge collected from over 73 million GitHub builders and greater than 61 million new repositories. It’s additionally the primary time a survey on respondent demographics has been included. Making sense of the info required an intensive design effort.

Our modest workforce, which included developer Jose Luis Garrido and challenge supervisor Miquel Lopez, was tasked with synthesizing this immense quantity of data for readers. Regardless of a delayed begin and different simultaneous tasks, we delivered.

Kicking Off the Design Course of

The primary stage of my knowledge visualization design course of was discovery. GitHub’s knowledge scientists collected and analyzed info from builders and repositories by Excel recordsdata, PowerPoint displays, and different knowledge units.

With this info, together with GitHub’s preliminary knowledge visualization sketches and a 60-page context doc, I started to consider how greatest as an example every knowledge set. Then, I set about designing every chart, map, and diagram for max person engagement and an intuitive person expertise.

Selecting Your Chart

There are three key factors to selecting an efficient knowledge visualization:

1. Determine the Chart’s Objective

Knowledge may be represented in quite a few methods–bar charts, line graphs, heatmaps, waterfall charts, and extra. Every chart serves a function, and it’s essential to make use of the appropriate one to make sure that a transparent and correct message is conveyed.

For instance, if you wish to current the distinction between two portions, use a bar chart. If you wish to present a development over time, use a line graph.

2. Take into account the Finish Consumer

You additionally want to pay attention to your customers’ skill to learn and analyze knowledge. Most of us are accustomed to pie, bar, and line charts. We see them in every single place, and we all know find out how to learn them.

However, fewer individuals know find out how to learn field plots, that are utilized in many analysis publications to summarize a number of knowledge variables into one chart.

If you happen to current customers with unfamiliar visualizations, they’ll have a tough time decoding the info.

3. Design With Readability

Is the info visualization clear and concise, or is there an excessive amount of noise? Bar charts may be a good way to show knowledge, however not if there are 100 bars with particular person labels. Likewise, streamgraphs are lovely and useful, however solely when there’s a transparent knowledge sample. Generally much less is extra.

Designing Excellent Knowledge Visualizations

All through the 2021 State of the Octoverse report, you’ll discover a wide range of knowledge visualizations which have been rigorously composed in accordance with the corresponding knowledge perception.

The Butterfly Chart

On the Overview web page, I wanted to design an infographic for 2 units of knowledge—displaying the place respondents labored earlier than the pandemic and after it. GitHub supplied me with two pie charts that every mapped out 4 knowledge factors: collocated, hybrid, totally distant, and never relevant. Nevertheless, pie charts aren’t notably efficient when evaluating two units of knowledge.

As a substitute, I opted for a butterfly chart. Butterfly charts plot the info as two horizontal bars aspect by aspect, resembling butterfly wings. These charts clearly present the distinction between two teams that share the identical parameters, and make evaluating two units of knowledge a lot simpler.

A butterfly chart for GitHub's Octoverse report showing two sets of data side by side. The data compares where respondents worked before (left) and after (right) the pandemic. There are four data points: collocated, hybrid, fully remote, and not applicable for both data sets.
GitHub supplied me with two pie charts that recognized the place respondents labored earlier than and after the pandemic. I felt it was simpler to provide a butterfly chart, which shows two units of knowledge subsequent to one another for simple comparability.

The Bump Chart

One other efficient knowledge visualization is the bump chart. We used this chart to current the data on the most well-liked pc programming languages utilized by builders over the previous eight years. Bump charts are nice for displaying modifications in rank over a time period, and so they have develop into a staple within the Octoverse report.

A bump chart for GitHub's Octoverse report that shows the most popular computer programming languages used by developers over the past eight years. Each language is represented by a different colored line. There are 10 languages in total.
For this knowledge visualization, I used an interactive bump chart to point out the most well-liked pc programming languages utilized by builders over the previous eight years.

The Treemap

I wanted as an example the totally different sectors to which respondents contribute code. The ultimate determination got here right down to pie charts versus treemaps.

Pie charts are helpful when you’ve three or 4 sectors and when the portions are clearly totally different. Nevertheless, our brains don’t course of angles nicely, so when there’s a pie chart with numerous equally sized wedges, individuals have a tough time deciphering which is greater.

In distinction, treemaps permit customers to simply examine segments to one another, in addition to to the entire. The most important rectangles are positioned within the prime left, adopted by progressively smaller rectangles. It’s simpler to examine straight strains than it’s to match wedges or angles.

A treemap for GitHub's Octoverse report illustrates the different sectors to which respondents contributed code during 2021. Each sector is represented by a rectangle.  The largest rectangles are placed in the top left, followed by progressively smaller rectangles. Each rectangle is a different color.
I used a treemap to current the totally different sectors to which the respondents had contributed code. In some circumstances, treemaps are preferable to pie charts as a result of it’s simpler to match rectangles than slices.

The Cartogram

Lastly, I wanted as an example the geographical distribution of organizations utilizing GitHub in 2021 by area or nation. For this, I used a inhabitants cartogram. Cartograms are maps through which the geometry is distorted to accommodate a specific financial, social, political, or environmental characteristic.

On this knowledge visualization, the scale of the squares signifies the inhabitants dimension. Moreover, the saturation of the sq.’s shade signifies what number of organizations in that space are utilizing GitHub.

A population cartogram for GitHub's Octoverse report represents the geographical distribution of organizations in 2021. This map alters the reality of physical location in order to better visualize a particular factor, in this case business. The saturation of the square's color indicates how many organizations are using GitHub, with lighter shades representing fewer and darker shades representing more.
Cartograms are nice for thematic mapping, once you need to emphasize info apart from bodily location, akin to an financial, social, political, or environmental characteristic.

Responsive Web site Design For GitHub’s Octoverse 2021

Along with designing knowledge visualizations, I additionally helped the GitHub workforce produce a web site for Octoverse 2021. This website was a hub for customers to learn, discover, and work together with the report’s knowledge insights.

To encourage person engagement, we opted for a totally responsive web site that may adapt the location’s rendering to totally different sized viewports. GitHub requested us to pay particular consideration to the desktop model after discovering that bigger gadgets drove nearly all of Octoverse visits.

When designing the responsive website, I adopted these greatest practices:

  • Composing textual content with desktop-friendly and mobile-friendly typefaces. This included selecting optimum font sizes, typefaces, and line size and top, and refining how the textual content seems to be at totally different breakpoints.
  • Laying out the visible parts on every web page to encourage scrolling.
  • Designing a user-friendly prime navigation bar that adapts its structure to the viewport dimension.

As a result of I designed the web site with totally different gadgets in thoughts from the beginning, most charts rendered nicely on all display screen sizes. I solely wanted to make minor changes for optimum viewability, akin to to the round dendrogram on the finish of the “Sustainable communities” part.

A circular dendrogram for GitHub's Octoverse report. Each circle represents one of the 20 largest repositories by category and repository contributors. Each sector is represented by a different color.
Dendrograms are a good way to point out the relationships between classes. You possibly can click on on the circles inside this interactive dendrogram to find the variety of repository contributors and % of contributors with account age <2 years.

Organizing the Data Structure

I explored totally different choices for the web site’s info structure. I didn’t need to overwhelm customers with an excessive amount of info, however I additionally didn’t need the location to be scattered or troublesome to navigate.

With this in thoughts, I began by designing an extended scrolling web site, with all of the content material on the identical web page. When that turned visually overwhelming, I attempted putting every chart on a separate web page. To assist with navigation, I added a aspect navigation menu to every web page with a desk of contents, just like what you would possibly discover in a e book. The ultimate design on the Octoverse web site consists of separate webpages for the three primary traits, plus a homepage that serves as a abstract of an important knowledge.

After deciding on the data structure, I moved on to designing the location’s content material construction, navigation stream, photos, and graphics. I created wireframes to map out the content material and present paths between totally different pages.

Making the Web site Interactive

The Scroll Progress Indicator

To fulfill GitHub’s request for an interesting, dynamic web site, we added interactive parts. As an example, beneath the highest navigation bar, I designed a scroll progress indicator so guests might maintain monitor of the place they have been on the location. As readers scroll down a web page, the indicator bar scales incrementally, and every web page has a distinct fill shade for the bar: grey, purple, blue, or inexperienced.

A portion of the
Refined touches of interactivity: The scroll progress indicator bar modifications from mild grey to inexperienced as you scroll down the web page.

Animated Headers, Pictures, and Knowledge Visualization

To maintain the web site from wanting flat, we determined to animate the part headers. I created the illustrations and our workforce’s developer animated them. We additionally animated the hero picture for the homepage and every subsection, and their corresponding chapter playing cards on the backside of every webpage.

Animated gif of the three chapter cards that can be found at the bottom of each webpage in GitHub's Octoverse website. They are: Writing and shipping code faster (with an interactive purple header), Creating documentation to support developers (with an interactive blue header), and Supporting sustainable communities (with an interactive green header.
On the backside of every webpage, you’ll find animated chapter playing cards for every of the three primary traits introduced in GitHub’s Octoverse.

We additionally made among the static knowledge visualization charts interactive. For instance, as you scroll over a line within the bump chart, the road thickens to emphasise the corresponding knowledge level. It’s a easy however efficient animation that lets website guests work together with the info and rapidly examine languages.

Creating Profitable Knowledge Visualizations and Digital Designs for GitHub: Key Learnings

Knowledge is just helpful if you may make sense of it, and the method of designing data-heavy content material that customers can simply decipher is difficult. Nonetheless, this collaboration with GitHub broadened my data in knowledge visualization design. Listed here are an important takeaways from this knowledge visualization case examine:

  • Know the model: Being accustomed to a model’s core type tips—akin to ​​its use of kind, shade, and pictures—quickens the design course of as a result of it frees designers to maneuver on to the inventive course of. I used to be fortunate that I knew lots about GitHub’s model earlier than the collaboration, and I used to be in a position to make use of this data to tell my designs.
  • Select the appropriate kinds of knowledge visualizations: Choosing the right visualization to signify a knowledge level is crucial. An incorrect illustration could cause confusion or convey the improper message.
  • Use shade correctly: The fitting shade mixture will information the reader’s eye and draw consideration to a specific knowledge level.
  • Keep curious: Once you’re making an attempt to inform a compelling knowledge story, you’re sure to come across complicated design issues, so it’s essential to be open to unusual options and steady studying.



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