Linear gauge
Compare a value with an explicit linear scale and target.
Chart ID: linearGauge. Independent import: @revolist/charts/linear-gauge.
Live example
Section titled “Live example”Loading chart…
Reading the chart
Section titled “Reading the chart”Compare actual and target on a straight numeric track. Explicit min/max keep multiple gauges comparable; orientation and segmentation control the presentation.
Data requirements
Section titled “Data requirements”Bind actual and target to stable numeric series IDs. The chart compares supplied results with supplied benchmarks; it does not calculate targets from other observations.
The roles below describe the chart's data contract. Generic category/value roles resolve from the dataset; explicitly bind specialized numeric roles as shown in the complete example.
| Data role | Field count |
|---|---|
category | 1 or more |
actual | 1 |
target | 1 |
Download the complete sample data and settings (JSON). See Data & Configuration for mapping, null values, updates and lifecycle rules.
Create this chart
Section titled “Create this chart”Install the package using the installation guide, give the host an explicit height, and call createLinearGaugeChart after the host mounts. This factory fixes the chart type to linearGauge.
<div id="chart" style="width: 100%; height: 450px;"></div>Complete runnable TypeScript example with sample data
import { createLinearGaugeChart } from '@revolist/charts/linear-gauge';
const container = document.getElementById('chart')!;const chart = await createLinearGaugeChart({ container, "dataset": { "revision": 0, "source": "client", "categories": [ { "id": "preview-category-0", "label": "Revenue", "path": [ "Revenue" ], "labels": [ "Revenue" ], "depth": 1, "kind": "leaf" }, { "id": "preview-category-1", "label": "Margin", "path": [ "Margin" ], "labels": [ "Margin" ], "depth": 1, "kind": "leaf" }, { "id": "preview-category-2", "label": "Retention", "path": [ "Retention" ], "labels": [ "Retention" ], "depth": 1, "kind": "leaf" } ], "series": [ { "id": "preview-series-0", "label": "Actual", "columnPath": [ "Actual" ], "labels": [ "Actual" ], "kind": "leaf", "prop": "preview-0" }, { "id": "preview-series-1", "label": "Target", "columnPath": [ "Target" ], "labels": [ "Target" ], "kind": "leaf", "prop": "preview-1" } ], "values": [ [ 72, 80 ], [ 58, 65 ], [ 84, 82 ] ], "analyticalFrame": { "fields": [ { "id": "pivot:category", "label": "pivot:category", "role": "dimension", "semanticType": "category" }, { "id": "pivot:series", "label": "pivot:series", "role": "dimension", "semanticType": "category" }, { "id": "preview-series-0", "label": "Actual", "role": "measure", "semanticType": "number", "sourceField": "preview-0" }, { "id": "preview-series-1", "label": "Target", "role": "measure", "semanticType": "number", "sourceField": "preview-1" } ], "observations": [ { "id": "[\"preview-category-0\",\"preview-series-0\"]", "dimensions": { "pivot:category": { "value": "Revenue", "label": "Revenue", "path": [ "Revenue" ], "labels": [ "Revenue" ] }, "pivot:series": { "value": "Actual", "label": "Actual", "path": [ "Actual" ], "labels": [ "Actual" ] } }, "measures": { "preview-series-0": 72 } }, { "id": "[\"preview-category-0\",\"preview-series-1\"]", "dimensions": { "pivot:category": { "value": "Revenue", "label": "Revenue", "path": [ "Revenue" ], "labels": [ "Revenue" ] }, "pivot:series": { "value": "Target", "label": "Target", "path": [ "Target" ], "labels": [ "Target" ] } }, "measures": { "preview-series-1": 80 } }, { "id": "[\"preview-category-1\",\"preview-series-0\"]", "dimensions": { "pivot:category": { "value": "Margin", "label": "Margin", "path": [ "Margin" ], "labels": [ "Margin" ] }, "pivot:series": { "value": "Actual", "label": "Actual", "path": [ "Actual" ], "labels": [ "Actual" ] } }, "measures": { "preview-series-0": 58 } }, { "id": "[\"preview-category-1\",\"preview-series-1\"]", "dimensions": { "pivot:category": { "value": "Margin", "label": "Margin", "path": [ "Margin" ], "labels": [ "Margin" ] }, "pivot:series": { "value": "Target", "label": "Target", "path": [ "Target" ], "labels": [ "Target" ] } }, "measures": { "preview-series-1": 65 } }, { "id": "[\"preview-category-2\",\"preview-series-0\"]", "dimensions": { "pivot:category": { "value": "Retention", "label": "Retention", "path": [ "Retention" ], "labels": [ "Retention" ] }, "pivot:series": { "value": "Actual", "label": "Actual", "path": [ "Actual" ], "labels": [ "Actual" ] } }, "measures": { "preview-series-0": 84 } }, { "id": "[\"preview-category-2\",\"preview-series-1\"]", "dimensions": { "pivot:category": { "value": "Retention", "label": "Retention", "path": [ "Retention" ], "labels": [ "Retention" ] }, "pivot:series": { "value": "Target", "label": "Target", "path": [ "Target" ], "labels": [ "Target" ] } }, "measures": { "preview-series-1": 82 } } ], "matrixCells": [ { "categoryId": "preview-category-0", "seriesId": "preview-series-0", "observationId": "[\"preview-category-0\",\"preview-series-0\"]", "measureFieldId": "preview-series-0" }, { "categoryId": "preview-category-0", "seriesId": "preview-series-1", "observationId": "[\"preview-category-0\",\"preview-series-1\"]", "measureFieldId": "preview-series-1" }, { "categoryId": "preview-category-1", "seriesId": "preview-series-0", "observationId": "[\"preview-category-1\",\"preview-series-0\"]", "measureFieldId": "preview-series-0" }, { "categoryId": "preview-category-1", "seriesId": "preview-series-1", "observationId": "[\"preview-category-1\",\"preview-series-1\"]", "measureFieldId": "preview-series-1" }, { "categoryId": "preview-category-2", "seriesId": "preview-series-0", "observationId": "[\"preview-category-2\",\"preview-series-0\"]", "measureFieldId": "preview-series-0" }, { "categoryId": "preview-category-2", "seriesId": "preview-series-1", "observationId": "[\"preview-category-2\",\"preview-series-1\"]", "measureFieldId": "preview-series-1" } ] } }, "bindings": { "actual": [ "preview-series-0" ], "target": [ "preview-series-1" ] }, "presentation": { "dataLabels": false }});
// When the host unmounts:// chart.destroy();Await updates before reading a snapshot or exporting. Call chart.destroy() when the host unmounts. See the live catalog to interact with this type.
Supported options
Section titled “Supported options”Set these fields in chartOptions. The option schema validates supported keys, ranges and choices; updating chartOptions replaces that authored object.
| Option | Default | Accepted values |
|---|---|---|
markOpacity | 1 | 0.2 to 1; step 0.05 |
orientation | vertical | vertical, horizontal |
scaleMin | 0 | -1000000 to 1000000; step 1 |
scaleMax | 100 | -1000000 to 1000000; step 1 |
segments | 1 | 1 to 100; step 1 |
The schema's scale defaults are editor presets. If you omit an authored maximum, the renderer can derive its effective scale from actual/target values. Set min/max explicitly for comparable gauges.
Titles, legends, theme and labels belong to presentation or the corresponding top-level setting. Axis, color, navigation and interaction support depends on the selected chart; see Data & Configuration.
Related charts
Section titled “Related charts”- Bullet — Compare actual values with explicit targets.
- Gauge — Compare an actual value with its target on a radial scale.
- KPI value — Summarize actual, target, and variance in a compact KPI card.
- Progress gauge — Show progress toward a target on a radial track.