Gauge Charts

The Gauge group covers 2 chart types that show a single instantaneous value. Designed for instant KPIs such as OEE, temperature, pressure, and tank fill level.

Prerequisite

The chart types on this page can only be selected in step 2 of the Cartography Widget Wizard. If you have not started widget creation, start the wizard first.

→ Cartography — Widget Creation

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Chart Types

Chart Type	Appearance	Primary Use
Radial Gauge	Circular needle gauge	OEE, speed, pressure
Linear Gauge	Horizontal / vertical bar	Tank level, progress

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Data Requirement

Both Gauge types take a single numeric value from the Compass record:

-- Example: instant kiln temperature
SELECT temperature FROM sensor_data ORDER BY ts DESC LIMIT 1

Even if the query returns multiple rows, Gauge uses only the value in the specified column of the first row.

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Wizard Flow

Gauge types route to a special Axis Design step:

Group → Chart Type → Compass Record → Axis Design (Gauge-specific) → Card Design → Display

Skipped Steps

In the Gauge flow, Step 5 Series Design, Step 6 Add Series and Step 7 General Design are skipped. All visual settings (bands, pointer, annotation) are made on the Axis Design screen.

→ Detailed walkthrough of all 9 steps for Gauge: Gauge Steps (1-9)

Sub-Flow Pages

Sub-Flow	Detail
Radial Gauge Flow	Radial Gauge Flow
Linear Gauge Flow	Linear Gauge Flow

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Radial vs Linear Selection

Preference	Radial Gauge	Linear Gauge
Visual impact (dashboard hero)	✓ Strong	Medium
Narrow widget area	Hard	✓ Suitable
Tank display on a vertical screen	Hard	✓ Suitable (vertical mode)
Classic analog gauge feel	✓	—