Can you create a data request and approval app? Introduction This week, we’re proving Sigma isn’t just for crunching numbers – it’s an all-weather, cross-functional tool. The challenge is to step outside pure analytics and build a lightweight, system for managing notes and reminders. The goal isn’t to replace your task app. It’s to show …
Introduction Sometime ago, I came across this post by Sarah Pallett ( X | LinkedIn ) introducing the idea of L-Shaped bar charts… … and I thought it would make a perfect WOW challenge (as it gave me an excuse to build a version myself). Click to open in Tableau Public Requirements Size 1000 x …
#WOW2025 | Week 38 | Can you build an L-Shaped bar chart? Read More
Introduction Welcome to Week 37 of 2025! Numbers tell the story, but sometimes a picture says it faster. This week we’re charging up our Sigma skills by adding images into table cells and playing with maps. You’ll learn how to make your tables more visual, show dynamic elements like battery levels or icons, and bring …
2025 Week 37 | Sigma : Can you picture this in your data? Read More
Introduction In this challenge, we are looking to add a bar with custom logic to a bar chart. Sometimes when I’m working with a customer, they want a baseline, total, or reference point to be included in the column of a column chart or the row of a table. If it’s just a matter of …
2025 Week 37 | Power BI: Adding a baseline bar in a bar chart Read More
Introduction Welcome to Week 36 of 2025! This week, we’re going to learn how to use a new feature of Sigma: Sparklines! We’re going to use sparklines to enhance sales data over time and illuminate some potential data issues. Then, we’ll create a mini Data App that allows end users to flag rows as with …
2025 Week 36 | Sigma: Can you spark a conversation? Read More
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
