Viz extension

Volume Heatmap

Hour of day by day of week, with hourly bars, weekday totals and hotspots that run far above normal

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This is the extension itself, running outside Tableau: click it, hover it. It fits right inside your workbook.
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Hour of day by day of week, with hourly bars, weekday totals and hotspots that run far above normal.

It is one of the five Operations extensions, general-purpose charts for operational data: volumes, statuses, hierarchies, durations and headline KPIs. Every one is dual-mode: the same code runs as a viz extension (a custom mark type on a worksheet's Marks card, Tableau 2024.2 and later) or as a dashboard extension that reads a feeder worksheet. Light and dark themes, and a demo mode on sample support-desk data.

Eric SummersUpdated 2026-10-13markdown