Diagnostics, ML & riskGenerated from the public API

SurvivalCurveChart

Check whether a model or a process is sane, from values you computed.

@luc/ui/charts

What it shows

Compare survival probabilities over time, including censoring marks and step changes.

Live preview

Two step curves that never rise, with censoring marks the caller supplied rather than inferred.

<SurvivalCurveChart
  series={[
    {
      key: "control",
      label: "Control",
      tone: "neutral",
      points: [
        { x: 0, y: 1 },
        { x: 3, y: 1 },
        { x: 3, y: 0.92 },
        { x: 6, y: 0.92 },
        { x: 6, y: 0.84 },
        { x: 11, y: 0.84 },
        { x: 11, y: 0.75 },
        { x: 16, y: 0.75 },
        { x: 16, y: 0.68 },
        { x: 24, y: 0.68 },
        { x: 24, y: 0.61 },
      ],
      censored: [{ x: 20, y: 0.64 }],
    },
    {
      key: "treated",
      label: "Treated",
      tone: "accent",
      points: [
        { x: 0, y: 1 },
        { x: 4, y: 1 },
        { x: 4, y: 0.88 },
        { x: 9, y: 0.88 },
        { x: 9, y: 0.76 },
        { x: 14, y: 0.76 },
        { x: 14, y: 0.69 },
        { x: 24, y: 0.69 },
        { x: 24, y: 0.58 },
      ],
      censored: [{ x: 7, y: 0.82 }],
    },
  ]}
  xFormat={{ kind: "number", decimals: 0, suffix: " mo" }}
  yFormat={{ kind: "percent", decimals: 0 }}
  height={320}
  ariaLabel="Survival by cohort"
/>

Controls

Height

320px

A chart measures its container, so it always needs a definite height.

State

The surface the chart is in — loading, empty and error are drawn by the component.

Accessible name

A drawing is not readable by a screen reader, so it needs a name that states what it shows.

The same fixture as the live preview above; the controls change how it is drawn, not what it measures.

Code

import { SurvivalCurveChart } from "@luc/ui/charts";

<SurvivalCurveChart
  series={[
    {
      key: "control",
      label: "Control",
      tone: "neutral",
      points: [
        { x: 0, y: 1 },
        { x: 3, y: 1 },
        { x: 3, y: 0.92 },
        { x: 6, y: 0.92 },
        { x: 6, y: 0.84 },
        { x: 11, y: 0.84 },
        { x: 11, y: 0.75 },
        { x: 16, y: 0.75 },
        { x: 16, y: 0.68 },
        { x: 24, y: 0.68 },
        { x: 24, y: 0.61 },
      ],
      censored: [{ x: 20, y: 0.64 }],
    },
    {
      key: "treated",
      label: "Treated",
      tone: "accent",
      points: [
        { x: 0, y: 1 },
        { x: 4, y: 1 },
        { x: 4, y: 0.88 },
        { x: 9, y: 0.88 },
        { x: 9, y: 0.76 },
        { x: 14, y: 0.76 },
        { x: 14, y: 0.69 },
        { x: 24, y: 0.69 },
        { x: 24, y: 0.58 },
      ],
      censored: [{ x: 7, y: 0.82 }],
    },
  ]}
  xFormat={{ kind: "number", decimals: 0, suffix: " mo" }}
  yFormat={{ kind: "percent", decimals: 0 }}
  height={320}
  ariaLabel="Survival by cohort"
  state="ready"
/>

Not controllable here

series / rows — The numbers are the caller's; the fixture above is the example.

Copy for an AI agentA specification an agent can act on: the import, the setup, the chosen props, the data contract and the accessibility expectation.

Implement `SurvivalCurveChart` from Luc UI. It is: Check whether a model or a process is sane, from values you computed.

Import it with: import { SurvivalCurveChart } from "@luc/ui/charts";
Requires: react ^19.0.0; react-dom ^19.0.0; react-hook-form ^7.0.0 (optional, for @luc/ui/forms/react-hook-form); tailwindcss ^4.0.0; node >= 22 (repository tools). Import the stylesheet once at the app root and wrap the tree in `LucProvider`. Both come from the package that publishes @luc.

Chosen configuration: `height={320}`, `state="ready"`, `ariaLabel="Survival by cohort"`.

Accessibility: keep the component's own semantics. Do not re-implement its ARIA wiring, do not add roles it does not declare, and make sure every interactive element is reachable and operable from the keyboard with a visible focus state.
Styling: use Luc UI design tokens and the component's own props. Do not restyle with raw colour literals and do not override the component's internal structure with page CSS.
Motion: respect `prefers-reduced-motion`. The component already does, so do not disable it.

Reproduce this state:
```tsx
<SurvivalCurveChart
  series={[
    {
      key: "control",
      label: "Control",
      tone: "neutral",
      points: [
        { x: 0, y: 1 },
        { x: 3, y: 1 },
        { x: 3, y: 0.92 },
        { x: 6, y: 0.92 },
        { x: 6, y: 0.84 },
        { x: 11, y: 0.84 },
        { x: 11, y: 0.75 },
        { x: 16, y: 0.75 },
        { x: 16, y: 0.68 },
        { x: 24, y: 0.68 },
        { x: 24, y: 0.61 },
      ],
      censored: [{ x: 20, y: 0.64 }],
    },
    {
      key: "treated",
      label: "Treated",
      tone: "accent",
      points: [
        { x: 0, y: 1 },
        { x: 4, y: 1 },
        { x: 4, y: 0.88 },
        { x: 9, y: 0.88 },
        { x: 9, y: 0.76 },
        { x: 14, y: 0.76 },
        { x: 14, y: 0.69 },
        { x: 24, y: 0.69 },
        { x: 24, y: 0.58 },
      ],
      censored: [{ x: 7, y: 0.82 }],
    },
  ]}
  xFormat={{ kind: "number", decimals: 0, suffix: " mo" }}
  yFormat={{ kind: "percent", decimals: 0 }}
  height={320}
  ariaLabel="Survival by cohort"
  state="ready"
/>
```

Usage

The values are prepared by the caller: this component draws the points it is given and computes no statistic of its own, so units, scaling and any summary have to be settled before the data reaches it.

It is drawn by the ECharts engine.

Worked examples with real data are on the family overview: Diagnostics, ML & risk

import { SurvivalCurveChart } from "@luc/ui/charts";

<SurvivalCurveChart
  series={[
    {
      key: "control",
      label: "Control",
      tone: "neutral",
      points: [
        { x: 0, y: 1 },
        { x: 3, y: 1 },
        { x: 3, y: 0.92 },
        { x: 6, y: 0.92 },
        { x: 6, y: 0.84 },
        { x: 11, y: 0.84 },
        { x: 11, y: 0.75 },
        { x: 16, y: 0.75 },
        { x: 16, y: 0.68 },
        { x: 24, y: 0.68 },
        { x: 24, y: 0.61 },
      ],
      censored: [{ x: 20, y: 0.64 }],
    },
    {
      key: "treated",
      label: "Treated",
      tone: "accent",
      points: [
        { x: 0, y: 1 },
        { x: 4, y: 1 },
        { x: 4, y: 0.88 },
        { x: 9, y: 0.88 },
        { x: 9, y: 0.76 },
        { x: 14, y: 0.76 },
        { x: 14, y: 0.69 },
        { x: 24, y: 0.69 },
        { x: 24, y: 0.58 },
      ],
      censored: [{ x: 7, y: 0.82 }],
    },
  ]}
  xFormat={{ kind: "number", decimals: 0, suffix: " mo" }}
  yFormat={{ kind: "percent", decimals: 0 }}
  height={320}
  ariaLabel="Survival by cohort"
/>

Data contract

Each `series` supplies ordered step `points` of `{ x, y }` and optional `censored` points. Survival must be non-increasing and the curves are already estimated by the caller.

Important configuration

Format time and probability axes, label the cohort, and show censoring marks only where the observation was actually censored.

Guidelines

When not to use

Do not smooth the step function or treat censored observations as events; that changes the survival estimate.

Configuration

Exported symbols
Export	Kind	Signature
`SurvivalCurveChart`	13 documented props	`({ series, xFormat, yFormat, title, description, state, height, className, ariaLabel, ariaDescription, onReady, onEvent, eager, }: SurvivalCurveChartProps) => import("@types/react").JSX.Element`