How do I create a phylo tree chart in JavaScript?

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

Why does my phylo tree 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.

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.

Bioinformatics · katucharts.js/bio

Phylo Tree

type: 'phylotree'

Phylogenetic tree for evolutionary relationships — rectangular or radial layouts with branch lengths and bootstrap values.

Edit the JSON on the right and press Run (or ⌘/Ctrl + Enter) — data, titles, categories and colors all update live.

Live

Phylo Tree

Edit · JSON

Data format

{ name, branchLength?, children?, custom?: { bootstrap, color } }

Data shape

The JSON you pass inside the chart — drop it straight into your series.

data: [{
  name: 'root',
  children: [
    { name: 'Clade A', branchLength: 0.1, children: [
      { name: 'sp1', branchLength: 0.2 },
      { name: 'sp2', branchLength: 0.2 }
    ] },
    { name: 'Clade B', branchLength: 0.15, children: [
      { name: 'sp3', branchLength: 0.18 }
    ] }
  ]
}]

Example

KatuCharts.chart('container', {
  series: [{ type: 'phylotree', data: [{ name:'root', children:[
    { name:'Clade A', branchLength:0.1, children:[{ name:'sp1', branchLength:0.2 }] }
  ] }] }]
});

Type-specific options

Option	Description
`layout`	'rectangular' or 'radial'.
`showBranchLengths / showBootstrap`	Display branch lengths / bootstrap support.

Variations

Radial layout

Switch layout to 'radial' to fan the tree out around a center.

KatuCharts.chart('container', {
  series: [{
    type: 'phylotree', layout: 'radial',
    data: [{ name: 'root', children: [/* … */] }]
  }]
});

Common errors

Why does my phylo tree 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 phylo tree chart in JavaScript?: Install with `npm install katucharts.js`, import the module with `import 'katucharts.js/bio';`, then call KatuCharts.chart(container, { chart: { type: 'phylotree' }, series: [...] }).
Why does my phylo tree 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.

Common options (color, visible, marker, dataLabels, animation, events, zones…) apply to every type — see Configuration → series. See it rendered in the gallery.