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7.0.1 • Public • Published

H5Web Visualization Components

Docs Version

H5Web is a collection of React components to visualize and explore data. It consists of two main packages:

While used in @h5web/app with HDF5 files, @h5web/lib visualization components are not tied to HDF5 and can be used to visualize data from any source.

For more information, visit the Storybook documentation site.

Getting started 🚀

npm install @h5web/lib three @react-three/fiber ndarray
import '@h5web/lib/dist/styles.css';

import React from 'react';
import ndarray from 'ndarray';
import { HeatmapVis, getDomain } from '@h5web/lib';

// Initialise source 2D array
const values = [
  [0, 1, 2],
  [3, 4, 5],

// Flatten source array
const flatValues: number[] = values.flat(Infinity);

// Convert to ndarray and get domain
const dataArray = ndarray(flatValues, [2, 3]);
const domain = getDomain(dataArray);

function MyApp() {
  return (
    <div style={{ display: 'flex', height: '30rem' }}>
      <HeatmapVis dataArray={dataArray} domain={domain} />

export default MyApp;

If your bundler supports it (e.g. webpack 5), you may be able to shorten the stylesheet import path as follows:

import '@h5web/lib/styles.css';


The following code sandboxes demonstrate how to set up and use @h5web/lib with various front-end development stacks:

Browser support

H5Web works out of the box on Firefox 78 ESR.

Support for Firefox 68 ESR is possible by polyfilling the ResizeObserver API. One easy way to do this is with polyfill.io:

  <!-- title, meta, link, etc. -->
  <script src="https://polyfill.io/v3/polyfill.min.js?features=default%2CResizeObserver"></script>

Older versions of Firefox are not supported.




npm i @h5web/lib

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