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nonodev96/read_npz_and_npy_browser.js

Last active October 15, 2024 12:41
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Read npy and npz in browser with js
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read_npz_and_npy_browser.js
import npyjs from 'npyjs'
import JSZip from 'jszip'
import JSZipUtils from 'jszip-utils'
const handleClick_debug_npz = async () => {
const file = process.env.REACT_APP_PATH + '/datasets/03-image-classification/kmnist/kmnist-train-imgs.npz'
await JSZipUtils.getBinaryContent(file, async (err, data) => {
if (err) {
throw err // or handle the error
}
const jsZip = new JSZip()
const npzFiles = await jsZip.loadAsync(data)
for (const [npy_filename, npy_data] of Object.entries(npzFiles.files)) {
if (!npy_filename.endsWith('.npy')) {
console.error('error .npy')
return
}
const npy_array_buffer = await npzFiles.files[npy_filename].async("arraybuffer")
console.log({ npy_filename, npy_data, npy_array_buffer: npy_array_buffer })
const _npyjs_ = new npyjs()
console.log(await _npyjs_.parse(npy_array_buffer))
}
})
}
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