Introduction This week’s challenge is brought to you by yet another Guest Coach and active member of the Tableau and Workout Wednesday communities. Presenting, Giulio D’Errico! Giulio proposed this challenge to me several weeks ago and we have worked together to build out his idea. This challenge applies some great fundamental skills, and then has …
#WOW2025 | Week 36 | Can You Build a Color-Coded Filter? Read More
Introduction This weeks challenge is an extension of week 21, whereby we will create a timeseries smoothing over lines rather than scatter points. The challenge here is to emphasize the difference between two populations, whilst having the details visible, but not prominent – getting the opacity/strokedash (for overlapping lines) and colour contrast (for perceptibility) right …
2025 Week 36 | Power BI: Area between timeseries smoothing Read More
Introduction Welcome to Week 35 of 2025! When building reports in Power BI, one of the most common requests I hear from users is: “Can I explore different KPIs side by side without creating dozens of visuals?” The good news: yes, you can! And it’s cleaner than ever with field parameters grouped by category. In …
2025 Week 35 | Grouped Field Parameters in a Matrix Read More
Introduction We’ve had a few weeks of beautiful data apps on Workout Wednesday, but today I want to focus on something that will make your data apps even cleaner, and that’s the quality of your data! I love the ‘Transpose’ feature that Sigma added a few releases ago, and it enables quality control (QC) checks, alerting, …
2025 Week 35 | Sigma: Can You Improve Your Data Quality? Read More
Introduction I’ve recently been running several hands-on Tableau workshops for beginner- to intermediate-level users across different prefectures. In one of those sessions, a participant asked how to visualize both ranking changes and differences in sales at the same time. This week’s challenge was inspired by that question. It might be a bit tricky, but I …
#WOW2025 | Week 35 | Can You Visualize Yearly Rank Changes in Sub-Category Sales? Read More
Can you create a data request and approval app? Introduction This week, we’re moving beyond analysis and into data apps. We’re going to solve one of the most persistent problems in any data-driven organization: data quality. The challenge isn’t just to clean data. It’s to build a complete, self-service system that empowers your business users …
2025 Week 34 | Sigma: Let’s Request Some Data Changes Read More
Introduction When building reports, one of the most common requests I hear from users is: “Can I see the top three, top five, or top ten items without having to look at multiple visuals?” The good news: yes, you can! And it’s cleaner than ever with numeric range parameters in Power BI. In this week’s …
Introduction I’ve been playing around with Tableau MCP and something called “Vibe Analytics” lately (look them up if you’re curious!).This week’s challenge was inspired by working with a generative AI to analyze the Sample Superstore dataset, exploring ways to break down profit into its key drivers and compare year-over-year performance. Have fun building this waterfall …
#WOW2025 | Week 34 | Can you breakdown YoY profit into its drivers? Read More
Introduction Welcome to Week 33 of 2025! We’ve all been there: you want to cross filter a dashboard by clicking on a field, and just as easily clear the selection. With charts, it’s easy – just click the white space. But with tables, it can be a little trickier. This week’s challenge: master cross-filtering from …
2025 Week 33 | Sigma : Can you cross filter tables? Read More
Introduction It’s good to be back again, and a bit sooner than last time! This time, we will be creating a visual using Deneb. Deneb has featured a lot in WoW, which I’m very grateful for, but I’ve yet to submit and exercise for it. As such, I wanted to try something that would help …
2025 Week 33 | Create a Circular Heatmap with Deneb Read More
