zarr-maps-tiling

Framework-independent utilities for loading, slicing, styling, and rendering tiled Zarr data.

The package contains the shared data pipeline used by zarr-maps-leaflet, zarr-maps-ol, and zarr-cesium. It does not depend on Cesium, Leaflet, or OpenLayers.

import { initZarrDataset, calculateSliceArgs } from 'zarr-maps-tiling';
import { colormapBuilder } from 'zarr-maps-colormap';

ZarrTileProvider accepts either a URL or a custom Zarrita Readable store. This supports Icechunk and other storage backends without coupling the tiling package to a specific client:

const store = await IcechunkStore.open(url, { branch: 'main', formatVersion: 'v1' });
const provider = new ZarrTileProvider({ store, variable: 'temperature' });

Private HTTP stores can use requestOverrides for static fetch options or transformRequest for per-object headers, credentials, proxies, and signed URLs. onAuthError is called once for HTTP 400/401 responses so applications can refresh expired credentials.

From the zarr-maps repository root, build all packages with:

npm run build