Charts / Choropleth

Choropleth

Rendered by viz_render in OODS Foundry 0.10.1, in each theme, from sample data this site supplies.

Generated from @oods/foundry 0.10.1

No named pattern draws this type, so this site supplies the data: Orders by region, in four made-up square regions.

Each chart is drawn live in your browser from the spec viz_render returned with it, so you can point at its marks. The SVG viz_render returned is the record: its hash is under each chart, and it shows where a live drawing would differ from it.

`choropleth`

Certified: 4 results

artifact_certify on choropleth, drawn in light: coverage certified, conformant true.

accessibility equivalence a11yEquivalence: pass
determinism determinism: pass
contrast contrast: exempt
accuracy accuracy: pass

Findings

OODS-A11Y-R-14 (warn) Set portability.tableColumnOrder when rendering tables with more than two columns.

Contrast: Geo carrier paints were read from the rendered ECharts SVG, but geo color remains exempt from categorical contrast grading under the standing gradient-essential ruling. certify reads actual carrier paints from the normalized SVG rendered from the retained projected ECharts option. Geo categorical contrast remains exempt, so no canvas ratio is graded. Scope: light/A.

Its narrative

Choropleth map covers 4 data points totaling 100 orders.

High orders: orders 42 (Northwest)
Low orders: orders 9 (Southeast)
Total orders: 100

Its data table

Data table for Visualization
Feature	Region	Orders
Northwest	Northwest	42
Northeast	Northeast	18
Southwest	Southwest	31
Southeast	Southeast	9

Certification covers charts only: it measures the chart's specification. A pass means no offered rule found a problem, not a general promise. An ECharts type certifies only when its data is supplied.

The call

{
  "brand": "A",
  "theme": "light",
  "spec": { … the normalized spec viz_render returned … },
  "data": { … the same data it drew … }
}