How do I create a kaplan-meier chart in JavaScript?

Install with `npm install katucharts.js`, import the module with `import 'katucharts.js/bio';`, then call KatuCharts.chart(container, { chart: { type: 'kaplanmeier' }, series: [...] }).

Does KatuCharts compute the Kaplan-Meier curve, or do I supply it?

You supply it. Pass the estimate as step points { x: time, y: survival probability }, computed with your statistics tool (for example R's survival::survfit). Add custom.ciLower and custom.ciUpper for the confidence band and custom.censored: true for censoring marks.

Is the number-at-risk table included?

It is opt-in. Set showAtRiskTable: true on the series and give each point a custom.atRisk count; the counts are drawn under the plot.

Which Kaplan-Meier options are available?

showConfidenceInterval and showCensorMarks (both on by default), confidenceIntervalOpacity, censorMarkSize, medianSurvivalLine and showAtRiskTable.

Why does my kaplan-meier chart render as a line chart?

The chart type was not registered. KatuCharts logs "KatuCharts: unknown series type " ", falling back to line" and draws a line chart rather than throwing. Import the module the type belongs to — for example `import 'katucharts.js/bio';` — before creating the chart.

Why do I get "Cannot read properties of null (reading 'appendChild')"?

The container element does not exist when the chart is created. Create the chart after the element is in the DOM: in React that means inside useEffect, not during render.

Bioinformática · katucharts.js/bio

Kaplan-Meier

type: 'kaplanmeier'

Curva de supervivencia (función escalonada) con intervalos de confianza opcionales, marcas de censura, una tabla de riesgo y una línea de supervivencia mediana.

Edita el JSON a la derecha y presiona Ejecutar (o ⌘/Ctrl + Intro) — los datos, títulos, categorías y colores se actualizan en vivo.

En Vivo

Kaplan-Meier

Editar · JSON

{
  "chart": {
    "type": "kaplanmeier"
  },
  "title": {
    "text": "Análisis de Supervivencia"
  },
  "yAxis": {
    "min": 0,
    "max": 1
  },
  "series": [
    {
      "name": "Tratamiento A",
      "color": "#B43417",
      "data": [
        {
          "x": 0,
          "y": 1
        },
        {
          "x": 3,
          "y": 0.95
        },
        {
          "x": 6,
          "y": 0.88
        },
        {
          "x": 9,
          "y": 0.82
        },
        {
          "x": 12,
          "y": 0.75
        },
        {
          "x": 18,
          "y": 0.68
        },
        {
          "x": 24,
          "y": 0.62
        },
        {
          "x": 30,
          "y": 0.55
        },
        {
          "x": 36,
          "y": 0.5
        }
      ]
    },
    {
      "name": "Tratamiento B",
      "color": "#1B1A15",
      "data": [
        {
          "x": 0,
          "y": 1
        },
        {
          "x": 3,
          "y": 0.9
        },
        {
          "x": 6,
          "y": 0.78
        },
        {
          "x": 9,
          "y": 0.65
        },
        {
          "x": 12,
          "y": 0.52
        },
        {
          "x": 18,
          "y": 0.4
        },
        {
          "x": 24,
          "y": 0.3
        },
        {
          "x": 30,
          "y": 0.22
        },
        {
          "x": 36,
          "y": 0.15
        }
      ]
    }
  ]
}

Formato de datos

{ x: time, y: survivalProb, custom?: { atRisk, ciLower, ciUpper, censored? } }

Estructura de datos

El JSON que pasas dentro del gráfico — colócalo directamente en tu series.

data: [
  { x: 0, y: 1.0 },
  { x: 6, y: 0.88 },
  { x: 12, y: 0.75 },
  { x: 18, y: 0.62 }
]

Ejemplo

KatuCharts.chart('container', {
  series: [{ type: 'kaplanmeier', name: 'Tratamiento A',
    data: [{ x: 0, y: 1 }, { x: 6, y: 0.88 }, { x: 12, y: 0.75 }] }]
});

Opciones específicas del tipo

Opción	Descripción
`showConfidenceInterval`	Dibuja la región sombreada del IC.
`showCensorMarks`	Marcas de verificación para observaciones censuradas.
`showAtRiskTable / medianSurvivalLine`	Conteos de riesgo / línea mediana.

Variaciones

Banda de confianza y censura

Sombrea la región de IC y marca las observaciones censuradas con ticks.

KatuCharts.chart('container', {
  series: [{
    type: 'kaplanmeier', name: 'Tratamiento A',
    showConfidenceInterval: true,
    showCensorMarks: true,
    data: [
      { x: 0, y: 1 },
      { x: 6, y: 0.88, custom: { ciLower: 0.8, ciUpper: 0.95, censored: true } }
    ]
  }]
});

Common errors

Why does my kaplan-meier chart render as a line chart?: The chart type was not registered. KatuCharts logs "KatuCharts: unknown series type "<type>", falling back to line" and draws a line chart rather than throwing. Import the module the type belongs to — for example `import 'katucharts.js/bio';` — before creating the chart.
Why do I get "Cannot read properties of null (reading 'appendChild')"?: The container element does not exist when the chart is created. Create the chart after the element is in the DOM: in React that means inside useEffect, not during render.
Why is the chart rendering with zero height?: The container has no height. A div with no content collapses to zero. Give it a height in CSS, or pass `chart: { height: 400 }` in the options.

FAQ

How do I create a kaplan-meier chart in JavaScript?: Install with `npm install katucharts.js`, import the module with `import 'katucharts.js/bio';`, then call KatuCharts.chart(container, { chart: { type: 'kaplanmeier' }, series: [...] }).
Does KatuCharts compute the Kaplan-Meier curve, or do I supply it?: You supply it. Pass the estimate as step points { x: time, y: survival probability }, computed with your statistics tool (for example R's survival::survfit). Add custom.ciLower and custom.ciUpper for the confidence band and custom.censored: true for censoring marks.
Is the number-at-risk table included?: It is opt-in. Set showAtRiskTable: true on the series and give each point a custom.atRisk count; the counts are drawn under the plot.
Which Kaplan-Meier options are available?: showConfidenceInterval and showCensorMarks (both on by default), confidenceIntervalOpacity, censorMarkSize, medianSurvivalLine and showAtRiskTable.
Why does my kaplan-meier chart render as a line chart?: The chart type was not registered. KatuCharts logs "KatuCharts: unknown series type "<type>", falling back to line" and draws a line chart rather than throwing. Import the module the type belongs to — for example `import 'katucharts.js/bio';` — before creating the chart.
Why do I get "Cannot read properties of null (reading 'appendChild')"?: The container element does not exist when the chart is created. Create the chart after the element is in the DOM: in React that means inside useEffect, not during render.

Las opciones comunes (color, visible, marker, dataLabels, animation, events, zones…) se aplican a todos los tipos — véase Configuración → series. Míralo renderizado en la galería.