How do I create a heikin-ashi chart in JavaScript?

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

Why does my heikin-ashi 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.

Financial · katucharts.js/finance

Heikin-Ashi

type: 'heikinashi'

Smoothed candlesticks computed from averaged OHLC values, highlighting trend direction.

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

Live

Heikin-Ashi

Edit · JSON

{
  "chart": {
    "type": "heikinashi"
  },
  "title": {
    "text": "Price Trend"
  },
  "series": [
    {
      "name": "KATU",
      "color": "#1B1A15",
      "upColor": "#B43417",
      "lineColor": "#1B1A15",
      "upLineColor": "#B43417",
      "data": [
        [
          120,
          128,
          118,
          125
        ],
        [
          125,
          131,
          122,
          129
        ],
        [
          129,
          135,
          127,
          133
        ],
        [
          133,
          138,
          130,
          136
        ],
        [
          136,
          142,
          134,
          140
        ],
        [
          140,
          145,
          137,
          143
        ],
        [
          143,
          149,
          141,
          147
        ],
        [
          147,
          152,
          144,
          150
        ],
        [
          150,
          156,
          148,
          154
        ],
        [
          154,
          160,
          151,
          158
        ]
      ]
    }
  ]
}

Data format

[[open, high, low, close]]

Data shape

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

data: [
  [120, 128, 118, 125],
  [125, 131, 122, 129],
  [128, 136, 125, 134]
]

Example

import KatuCharts from 'katucharts.js';

KatuCharts.chart('container', {
  chart: { type: 'heikinashi' },
  series: [{
    name: 'KATU',
    data: [
      [120, 128, 118, 125],
      [125, 131, 122, 129],
      [128, 136, 125, 134]
    ]
  }]
});

Type-specific options

Option	Description
`(candlestick options)`	up/down colors, line colors.

Common errors

Why does my heikin-ashi 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 heikin-ashi chart in JavaScript?: Install with `npm install katucharts.js`, import the module with `import 'katucharts.js/finance';`, then call KatuCharts.chart(container, { chart: { type: 'heikinashi' }, series: [...] }).
Why does my heikin-ashi 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.