@loaders.gl/zarr/dist/lib/load-zarr.js

Framework-independent loaders for Zarr

// loaders.gl
// SPDX-License-Identifier: MIT
// Copyright (c) vis.gl contributors
import { loadMultiscales, guessTileSize, guessLabels, normalizeStore, validLabels } from "./utils.js";
import ZarrPixelSource from "./zarr-pixel-source.js";
export async function loadZarr(root, options = {}) {
    const store = normalizeStore(root);
    const { data, rootAttrs } = await loadMultiscales(store);
    const tileSize = guessTileSize(data[0]);
    // If no labels are provided, inspect the root attributes for the store.
    // For now, we only infer labels for OME-Zarr.
    const labels = options.labels ?? guessLabels(rootAttrs);
    if (!validLabels(labels, data[0].shape)) {
        throw new Error('Invalid labels for Zarr array dimensions.');
    }
    const pyramid = data.map((arr) => new ZarrPixelSource(arr, labels, tileSize));
    return {
        data: pyramid,
        metadata: rootAttrs
    };
}