VizWiz

Data Viz Done Right

December 6, 2016

Tableau Tip Tuesday: How to Create Barcode Charts

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In this week’s Tableau Tip Tuesday, I show you how to create barcode charts. I’ve used these charts several times recently:

I also have another video with five use cases for strip plots. I use the term strip plot interchangeably with barcode chart. The difference in this video is that I show you two methods for creating them and the visual differences between the two methods.

December 5, 2016

A History of the North London Derby in the Premier League

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I really liked the learnings that I got last Friday from Rhiannon Fox and the cricket viz I ended up creating. It got me to thinking about other data that I could use with a similar visual display to continue practicing what I learned. Arsenal was preparing to play London rival West Ham on Saturday while I was watching my son skateboarding, so I thought I’d create something comparing Arsenal with their biggest rival, Tottenham Hotspur.

I was able to quickly get all of the results from Wikipedia, which I then imported into Google Sheets and then connected to Tableau. I showed a couple of iterations to Gwilym this morning at the Data School to get his feedback and we agreed that displaying goal difference was the most effective display. In addition, I added dots to indicate the winner. The goal difference display helped show the ebbs and flows of the rivalry way better than showing the goals scored by each team in each match as a diverging bar chart.

Click on the image for the interactive version. Does this display work for you? What might you do differently? Leave a comment and let me know or, better yet, download the workbook, iterate on my design and leave a comment with a link to your version. Enjoy!

December 4, 2016

Makeover Monday: The Global Flow of People

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The chord diagram that is the subject of Makeover Monday week 49 was selected due to a conversation I had on Twitter with a few people last week. Andy Kirk then suggested we use it for Makeover Monday, so here we are. As I mentioned on Twitter, I have yet to see a chord diagram that I think is easy to read. Perhaps it’s me, but in general, I find them overly complex and confusing. The chart in question is about the global flow of people.


What works well?

  • Design captures your attention and encourages you to interact
  • Design clearly portrays a flow
  • Nice drill in to the country level when you click on a region
  • Good use of size to indicate the number of people moving between regions and countries
  • Really fast interactivity


What doesn’t work well?

  • For me, it’s way too busy; I don’t like how there are lines going all over the place
  • You can’t see any trends, but maybe that was an intentional choice
  • Some of the colors are too similar like East Asia, Southeast Asia and Oceania
  • There’s no order to the regions, not even alphabetical, so why are they in the order they are?
  • It’s extremely difficult to compare different arcs, e.g., which region to region movement is 2nd most?

For my version, I wanted to keep it very simple. The question I’m trying to answer is which regions have the highest movement or between or within regions? I chose to present it as a simple heat map and to only focus on the region to region flow. I felt including the countries overcomplicated the visual.

December 3, 2016

Celebrating 114 Years of the Bermuda Cup Match

Friday at the Data School, we had Rhiannon Fox in to run a workshop about her design process and how the Data School can apply that to their work. If Rhiannon’s name is familiar, it’s because we used her great Bermuda population growth infographic for week 30 of Makeover Monday.

We like to expose the team to multiple viewpoints throughout their training. Not every process resonates with every person, so providing them broad opinions helps them find their own way and their own process. Personally, I really enjoyed the workshop with Rhiannon as it opened my eyes to a whole new way of researching ideas and getting inspiration.

As a bit of context, the first day of every Data School cohort starts with me teaching them about data viz best practices, making choices, and critiquing visualisations. We use a lot of A2 paper and crayons! Then, about a month into their training, we have Caroline Beavon come in run a workshop. Caroline’s workshop is based more on infographics and storytelling as she comes from a journalism background. Her workshop builds upon mine. Rhiannon’s then builds upon Caroline’s, however, her approach is more from a graphic designer’s perspective.

I‘ve learned a ton from both of them, but don’t want to give away all of their secret sauce. Contact either or both of them if you’d like to hire them to run a workshop for you. Both of the workshops are absolutely amazing!

In Rhiannon’s workshop, I ended up missing out on a lot of the sketching parts due to meetings and the team presented some really amazing drawings they did for their project. The hardest part was NOT using Tableau to explore the data. In fact, the data exploration is done through the drawings themselves. Since I was not able to catch up, I cheated and used Tableau. Here’s what I built in about an hour or so. Click on the image for the interactive version.

December 1, 2016

Makeagain Monday: Share of Wealth vs. Immigrant Population

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Makeover Monday participant Will Chen created this chart for week 48 that compares the share of wealth of different groups to the immigrant population. If you’re not following Will, you should. He’s been creating videos of his Makeover Monday process.


Instantly, I saw a more compelling story and decided to take his viz and iterate. In just a few steps, I changed his viz into a story about the how the change in wealth of the top 0.5% seems to trend along with the percentage of immigrants in the U.S.


Correlation does not mean causation, however, it does lead me to think…will President-elect Trump’s stance on immigration lead to less wealth for him and his peers? I guess we’ll find out in a few years. The Tableau version is embedded below.

November 30, 2016

How Many Times Have Teams Been to the World Series?

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Yesterday I wrote about how much I liked a World Series viz created by Business Insider. One of my favourite ways to learn Tableau, and one I highly recommend to everyone, is to reproduce work that inspires me.

What was most fun about creating this viz is that it’s built completely with ASCII squares. Yes, I use a measure for the axis, but the measure is merely a placeholder. I learned a lot creating this viz this way; basically you can easily create a unit chart without having to densify the data by using a simple calculation that trims the ASCII squares instead. I also included bar charts in tooltips.

Download the workbook to see how I did it. In the meantime, here’s my take on the frequency of teams appearing in the World Series.

November 29, 2016

86 Tips in 45 Minutes | Our Presentation from DATA16

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Tableau Tip Tuesday is normally reserved for a single tip, but this week I'm happy to present to you 86 tips! That's right...86! Embedded below is the presentation from the Data16 session I did with Jeff Shaffer.

Our goal going into the session was to see if we could get to 50 tips in 50 minutes. Right before we started, we decided to let our wonderful judges and the audience count the tips. Why? Because Jeff and I have been using Tableau for a long time and sometimes we do things that come second nature to us that others didn't know.

This was BY FAR the most fun presentation I've ever given or been a part of. Thanks Jeff for being a great partner!!

If you'd like to follow along, you can download the unedited workbook of my tips here and my final workbook here.

My advice, pause the video along the way and try to reproduce the things I do using the starter workbook. Have fun!

November 28, 2016

Makeover Monday: Patterns of Change in Wealth Inequality

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No one loves iterating in Tableau more than me. So when I saw this tweet by Matt Hoover, I knew I had to give a connected scatterplot a try as well.


A connected scatterplot is great for visualising paired time series data. In this case, the pair is the bottom 90% vs. the top N% as picked by the user. The line is colored by the difference between the bottom 90% and the top N%. I added dots on the ends of the lines to make the start and end easier to find.


Makeover Monday: Wealth Inequality in the United States

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For Makeover Monday week 48, we look at this visualisation from Business Insider about wealth inequality in the US.


What works well?
  • Line chart is an appropriate chart choice as we're comparing two values over time
  • Title is clear and simple
  • Good sourcing and footnotes
  • Tells a simple story effectively

What could be improved?
  • Only one axis is needed
  • Title is a bit misleading as the values aren't actually equivalent
  • Color choices imply democrat vs. republican
  • Feels like there's a bit of extra visual clutter
  • Difference could be accentuated more

This week, I again recorded all of my work along the way. In 45 minutes, I created 175 images. But this doesn't include parameters, filters and all the work done inside the dashboard, otherwise it would probably be twice as many.



You'll see in my final version that I put a lot of focus on the difference between the lines. I also used a parameter so the user can pick their own comparison. I also have a dynamic subtitle that updates based on the values picked in the parameter.

November 24, 2016

From London to New York in 500 miles | My New York City Marathon Training Visualized

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Just about three weeks ago I ran my second ever marathon, and it sure was a big one! In fact, the New York City Marathon set a world record for the most marathon finishers: 51,388 finishers, 51,995 people started, a 98.8% completion rate.

Like most runners, I love my running data! My watch syncs to Tom Tom, Runkeeper, Strava and Nike+. Why all of them? Well, why not? Naturally, I wanted to see how my training went. Was it effective? How'd I do in my long runs? How often did I run? What was my average pace? The questions are endless.

I'm also in the middle of testing a new Web Data Connector for Strava that brings back A TON of information about each run. Mix all of this together and you get a dashboard of my marathon training.

Click on the image for the interactive version (it's too wide for my blog). Once you're there, you can click on any activity and see the map update with the route of each run. The activity will also be highlighted across all of the charts.

And yes, I got the data from Strava yet I'm using Runkeeper colors. I simply like their colors better. Enjoy!

November 23, 2016

Makeover Monday Goes to the Sydney Tableau User Group

Very, very early this morning, I had the pleasure of speaking to the first Sydney Tableau User Group. My good friend Fi Gordon asked me to join them to talk about Makeover Monday, how I approach makeovers, why I do them, examples of work I’ve done, and the encourage people to get involved.


It was bit of a different atmosphere as I couldn’t hear or see anyone. Fi, being the genius she is, was messaging me on Twitter throughout to keep me updated.

Without further ado, here’s my presentation. Enjoy!

November 22, 2016

Tableau Tip Tuesday: How to Swap Metrics in a Single Table and Conditionally Format the Values

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There are times when you need to create a table in Tableau, so why not make it a table that's actionable? In this week's tip, I show you how to create a table that allows you to swap out the metric that is displayed, conditionally format the color of the text, and include an indicator to bring it attention.

November 21, 2016

Makeover Monday: Wildlife Strikes in the USA

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This week for Makeover Monday we look at one of the best visualisations I've ever seen and also help Tableau Research by logging all of our activities while we use Tableau.

Let's start with Kelly Martin's incredible airplane/wildlife collisions dashboard:


What works well?
  • To put it simple, everything works well here. Kelly has a very intentional design style.
  • Minimal use of color
  • Great use of whitespace
  • Excellent annotations
  • Great use of icons
  • Nice instructions
  • Good interactivity

What doesn't work well?
  • Remove the size legend and indicate that through text

As for the advanced logging, Tableau Research asked this week that we enable a setting on Tableau that creates an image every time you do something on a worksheet. I had no idea what this would result in, but in exactly 60 minutes, I created 396 images. That's a lot of squiggles! Here's a gif of my iterations:


For my makeover, I wanted to implement a visualisation technique I learned from Tableau's Michele Tessari at #Data16 in his session "Artful Data: The Balance of Art and Analysis". My goal was to show the number of strikes by weekday and month, but also to show the values for each state.

Another fun week of playing with data. Here's my take on this data set:

November 19, 2016

The United States Electoral College | A Genius Representation of the People

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Unless you've been living under a rock, you will know that there was a Presidential election on November 8th. Confusing everyone was the fact that Donald Trump won the electoral vote, yet Hillary Clinton won the popular vote. This made me think, how does the Electoral College work and does it accurately represent the people?

This turned out to be a fantastic civic learning experience for me. And exploring the data with Tableau helped me understand how it all works. I know a lot of people, particularly those I work with in the U.K., that are confused by this election and how the popular candidate didn't win. To aid in this understanding, I've created this story points visualisation to explain how the electoral college works, how electoral votes are allocated, and how the election would have turned out if the electoral college was based strictly on population.

November 14, 2016

Makeover Monday: The Words of the Top 100 Songs of All-Time

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For week 46 of Makeover Monday, we take a look at this Viz of the Day by Chris Love of the lyrics of the top 100 songs of all-time.


What works well?
  • Simple title
  • Good references

What doesn't work well?
  • Treemaps are generally a poor choice for showing the distribution of the words
  • Way too many colors
  • It's impossible to make any sense of the words and see any patterns

I know Chris knows better, so I can only assume he was experimenting when he created this. Have a look at this Tableau Public profile and you'll see this is quite out of the ordinary for Chris, especially since he's a massive believer in keeping it simple (KISS).

I played with the data for a bit and noticed that many stop words were included. This led me to doing a quick analysis of stop words versus non-stop words. Given the time constraint, I didn't create anything too fancy. I merely wanted to know frequencies of words and the artists that use them.

November 7, 2016

Makeover Monday: Austin Restaurant Inspections

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This week we took Makeover Monday Live to TC16! Since we're in Austin, Andy Cotgreave found an awesome data set about Austin restaurant inspections. Here's the visualisation we're looking to makeover:


As you drill into the viz you get more and more detail, like this:



What works well?

  • Super intuitive interface; everyone know how to drill in on a map
  • Simple instructions
  • Nice grouping of restaurants with a counter
  • Nice use of symbols to represent a specific restaurant
  • Good use of colors

What could be improved?
  • Takes too long to drill in. When I played with it, they could easily show more specific restaurants at once and not shown so many groups.
  • I have no idea how many restaurants are good or bad.

Here's my alternative, designed to be used on a phone. I did that because that would be the likely use case for it. I added a summary of the scores and you can filter down to just those restaurants.

November 2, 2016

Makeagain Monday: Highlighting the Changes in Satisfaction with EU Transport

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Another quick Makeagain Monday as I get ready to head to the States. This morning, I look at this visualisation from Pablo Sáenz de Tejada, who was in the first cohort of The Data School.


What would I change?

  • The red/green color scale might be tough for color blind folks.
  • I'm confused by the colors on the ends of the bar because those don't represent the same thing as the color of the middle bar.
  • There are too many controls for me at the top. Might this be better as a static image with a singular story? Pablo chose to make it interactive, which is perfectly fine. I simply might choose to do different. Neither is better.
  • There are a LOTS of cities in this. I would show the top and bottom 10 for simplicity. Again, personal preference.

Here's my step-by-step makeagain of this visualisation. Click on the gif for the interactive version.


November 1, 2016

Makeagain Monday: Popping the Bubbles of the Scottish Index of Multiple Deprivation

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I was discussing the makeovers of makeover I did last week and Megan Hunt told me that her mother calls Makeover Monday "Makeagain Monday", which got me thinking, maybe that should be the name for the series of posts I write where I makeover a Makeover Monday. So today, allow me to introduce you to Makeagain Monday.

The purpose isn't to pick on anyone. I use this as a teaching method. How can I take an existing visualisation and show I would improve and simplify it step-by-step. I only detail what I think doesn't work about the visualisation.

This week we looked at the Scottish Index of Multiple Deprivation and Pablo Gomez create this visualisation (click on it for the interactive version):


What doesn't work?

  • Packed bubbles are basically impossible to compare
  • What does the size and color of the bubbles mean? 
  • Do the colors coordinate with the scatter plots? (The answer is no, but I didn't know that until I downloaded the workbook.)
  • What do the scatterplots add? They all basically look the same.
  • The massive image on the right takes up like 25% of the space. What does the flag mean?

With that, here's my step-by-step makeover as a gif. Click on the gif for my version on Tableau Public.


October 31, 2016

Makeover Monday: Which areas of Scotland suffer the least deprivation?

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Back at it for Makeover Monday week 44 before I head off to the States to run the New York Marathon and go to Austin for the Tableau Conference. This week we look at the Scottish Index of Multiple Deprivation, a viz I've been wanting to have a look at for almost a year now. There are lots of charts on the website; I've asked everyone to focus on this bar code chart.


What works well?

  • Nice headers to help you know what is good and what is bad
  • Alphabetical sort makes it easy to find a specific local authority
  • Shading of the lowest 15% provides nice context
  • Bar code representation makes spotting concentrations really easy

What could be improved?

  • Unless you read the accompanying website, you can't really make sense of the chart on its own as there is now scale and no explanation of how to read it.
  • There's no way to rank the local authorities from best to worst (or vice versa).
  • Interactivity would help with know which datazones are which
  • None of the other ranking metrics are included; this only covers the overall rank

I really like the bar code chart, so I set out to recreate it with a better color scheme. I also include a more meaningful title, explanations via the information icon, and an option to choose different metrics. In addition, I used the score instead of the rank. For me, using the score makes more sense because you're looking at how each datazone is doing instead of how they rank against each other.

Here are two example of the bar code chart I created, one for the overall score and one for education.



What I did notice, though, was that two of the scores are percentages: Employment and Income. So for those metrics, I switch the viz to a dot plot. The more dots that are on top of each other, the dark they are represented, thus showing the concentration. Here's an example of Employment scores.



Here is the full interactive version. Overall, a fun visualisation to re-create.

October 28, 2016

Viz Makeunder - Clinton vs. Trump: The State Battlegrounds

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One of the great benefits of working for The Information Lab is the great team of trainers. Today, André de Vries is at The Data School teaching Alteryx, which frees me up to do another "makeunder" as Matt Francis called it.

Today, let's take a look at this election viz from Rob Radburn.


What doesn't work for me?

  • It's a time series visualisation, yet it's vertical. I prefer time series to be horizontal.
  • I don't care for the grey background.
  • Black text on the dark grey is hard to read
  • Don't need the labels on both side of both axes
  • Gridlines should be for the measure not the time series
  • Too many filters

Here's my 7-step makeunder. Click on the image for the interactive version.