Heatmap · Charts · OODS Foundry

`pattern:viz:correlation-matrix`

Usage and retention correlate strongly, while support tickets are inversely related to every metric. — light `sha256:de6a32e63147…`

`pattern:viz:time-grid-heatmap`

Lunch blocks mid-week trend hottest, with lighter mornings and Friday tapering off. — light `sha256:6deab9d419bd…`

Certified: 4 results

artifact_certify on correlation-matrix, drawn in light: coverage certified, conformant true.

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

Contrast: No gradeable OODS series paint: the compiled spec has no color encoding or OODS mark color, or none of its series paints rendered — author-decorative colors are skipped as chrome. certify grades the series-to-paint assignment of the rendered chart (the compiled spec rendered through @oods/viz-render), against the requested CSS scope canvas. Scope: light/A.

Its narrative

Expansion tracks with usage/retention, support ticket volume is the only negative driver.

Usage↔Retention correlation = 0.78
Support inverse relationship is strongest vs usage

Its data table

Correlation coefficients
Metric	Metric	Correlation
Usage	Usage	1
Usage	Retention	0.78
Usage	Expansion	0.46
Usage	Support	-0.32
Retention	Usage	0.78
Retention	Retention	1
Retention	Expansion	0.54
Retention	Support	-0.28
Expansion	Usage	0.46
Expansion	Retention	0.54
Expansion	Expansion	1
Expansion	Support	-0.12
Support	Usage	-0.32
Support	Retention	-0.28
Support	Expansion	-0.12
Support	Support	1

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 … }
}