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Iron Viz (2022) reaction Livestream - Tableau Conference 2022

We toured the Viz Gallery, broke down the finalists' work and reacted live as CJ, Kimberly and Will built their Iron Viz masterpieces in 20 minutes.

Part ofTableau Conference 2022
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  • The Tableau Conference virtual Viz Gallery is worth exploring, with a dedicated room for the Iron Viz finalists where each viz links straight through to Tableau Public for editing in the browser.
  • Keeping old vizzes on your Tableau Public profile shows your progression over time, so don't delete early work that documents your learning journey.
  • Finalists pushed Tableau's features creatively: violin charts for before/after distributions, map layers used unconventionally for small multiples, makepoint calculations for custom maps, and parameters used to store interactive state within a session.
  • Will Sutton's interactive 'Interpreting Art' qualifier uses a parameter as a pseudo-database to capture responses, and a vertical Sankey to guide the reader down the narrative.
  • Animation in Iron Viz works best for time sequences; used unwisely it pulls attention at the wrong moment and distracts from the story.

This is a co-hosted reaction stream to the Iron Viz 2022 finals, walking through the finalists' qualifier vizzes and then live-commentating the 20-minute build and judging. The value is in the analysis of what made each viz work, not a tutorial, but there's plenty to learn from seeing skilled visualisations picked apart in real time.

Tim and Andre co-host from the Tableau Conference, touring the virtual Viz Gallery before the live finals between three Iron Viz contestants, then watching and reacting as each builds a dashboard live on stage.

The Breakdown
  • Explore the virtual Viz Gallery first 1:05

    Before judging the finals, it's worth browsing a conference's Viz Gallery: the Iron Viz finalists each had a dedicated room with vizzes that link straight through to Tableau Public so you can open and edit them yourself.

  • CJ Mays' qualifier: interactivity and personality 2:46

    CJ's Diary of a CEO-style viz layered engaging design with a real sense of personal voice, showing that a strong Iron Viz entry isn't just technical polish but a distinctive narrative style.

  • Will Sutton's Interpreting Art: parameters as pseudo-database 5:43

    Will's viz used a parameter to capture and store visitor responses within a session, functioning like a lightweight database, paired with a vertical Sankey that physically guides the reader down through the story rather than sideways.

  • Kimberly Scott's Archibald Prize viz: layered maps 9:14

    Kimberly's piece let you switch map layers on and off as you scroll, and kept rewarding further scrolling with additional drill-down detail — a reminder that a good long-form viz can keep giving beyond the first screen.

  • Why people watch Iron Viz 11:30

    The audience chat surfaced a common theme: people watch for inspiration and to see how contestants solve genuinely hard problems, like connecting to large or awkward datasets, not just for the final polished output.

  • Judging live builds: watch for technique choices under pressure 43:20

    During the 20-minute build, watch what chart types and features contestants reach for and why: violin charts to show before/after distributions instead of box plots, map layers repurposed for unconventional small multiples, and makepoint calculations for custom maps. These are all techniques you can borrow independent of the competition context.

  • Animation: use it for time, not decoration 59:25

    Animation works best when it represents an actual time sequence in the data; used purely for effect it pulls attention at the wrong moment and distracts from the story you're trying to tell. Decide whether your data has a genuine time dimension before reaching for animation.

  • CJ's final presentation and reflections on the format 1:01:51

    Closing thoughts favoured keeping old, rougher vizzes visible on a Tableau Public profile rather than deleting them, since they document a visible learning progression that newer visitors and employers can see.

Worth Knowing
  • Don't delete your early, less polished Tableau Public vizzes — they show your growth over time and can be genuinely useful to others learning the tool.
  • A visually excellent competition viz isn't automatically a good place to start learning the product from scratch; some techniques are advanced and hard to reverse-engineer as a beginner.
  • Vertical Sankeys can work well for guiding a reader down a narrative path, unlike a traditional horizontal Sankey.
  • Iron Viz builds are judged on storytelling, design and analytics together, not on technical complexity alone.
Use It When

Watch this if you want a guided critique of what separates a strong data-story viz from a merely technical one, or you're looking for inspiration on parameters, map layers and animation used creatively under real time pressure.

How this Rollup was made provenance & method

A Rollup is drafted by AI from the video's transcript, then reviewed and edited by Tim. Everything used to produce this one is listed below — the model, the exact prompt, and the source video — so the process is transparent and reproducible.

Transcription
On-device — NVIDIA Parakeet v3 for recent videos, OpenAI Whisper large-v3 for earlier ones. The transcript never leaves the machine or gets published.
Drafting
Claude Sonnet 5 in the cloud, from that transcript.
Prompt
The exact Rollup prompt (v2) — the full system prompt, unedited.
Source video
Watch on YouTube
Drafted
5 July 2026 at 09:38
Reviewed & edited
5 July 2026 at 09:41 · by Tim Ngwena

Model + prompt + video is everything you'd need to recreate a Rollup like this yourself. The one thing we don't share is the transcript.

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