Tableau | Data visualisation | Analytics How to use the new Explain data enhancements in Tableau Desktop 2019.4
Tableau 2019.4 quietly upgrades Explain Data to dig into geospatial fields and unvisualised measures with no extra effort on your part.
- Explain Data in 2019.4 automatically analyses geospatial or spatial fields, surfacing insights at a state level for a selected data point.
- The enhancement works without changing anything in your visualisation; the same Explain Data option simply returns deeper analysis.
- Earlier capabilities such as flagging extreme values and number of records are retained alongside the new geographic reporting.
- Tableau is continuing to add depth and breadth to Explain Data, all within the same single feature.
Tableau 2019.4 upgrades Explain Data so it can also dig into geospatial fields, unvisualised measures and calculated fields, giving you deeper insight into a data point without changing your chart at all.
Tim compares the same chart and the same Explain Data click across two versions: 2019.3 and 2019.4, using a data point in London as the example.
- Explain Data in 2019.3 as a baseline 0:20
Running Explain Data on a data point in the older version surfaces analysis like number of records behind the point and any extreme values in the data, but it stops there.
- Same chart, same click, in 2019.4 0:47
You don't need to modify your visualisation to get the improvement: open the identical chart and run Explain Data exactly as before, and the extra analysis appears automatically.
- Geospatial fields now get analysed 1:02
If your data has geographic or spatial fields, Explain Data will dig into them and report insights at a more granular geographic level, such as breaking a data point down by state.
- Previous capabilities are retained 1:20
The earlier analysis, such as flagging extreme values, still shows up alongside the new geographic reporting rather than being replaced by it.
- Signal of ongoing investment 1:41
Tim frames this as Tableau continuing to add depth and breadth to Explain Data over time, all housed within the same single feature rather than as separate tools.
- The upgrade requires no changes to your visualisation or workflow — it's purely a version upgrade to the underlying Explain Data engine.
- Geographic insight is reported at a state level in the example shown; the granularity will depend on what geographic fields exist in your data.
Reach for this whenever you're using Explain Data on a dataset that includes geographic fields, extra measures not in the view, or calculated fields — upgrading to 2019.4 gets you richer analysis for free.
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
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