The avatar for @klettsch
Christian Klettner
Risk, finance, economic modelling, forecasting and stress testing
Public
Edited
Aug 7, 2024
2
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parquetWasm = import("https://cdn.jsdelivr.net/npm/parquet-wasm@0.6.1/esm/parquet_wasm.js")

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arrowp = await FileAttachment("test-arrow.parquet")
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dt = getDataTable(arrowp)
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dt.view()
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nanoparquet= await FileAttachment("test-nanoparquet.parquet")
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nanodt = getDataTable(nanoparquet)
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readParquet = parquetWasm.readParquet
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init = parquetWasm.default
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async function getDataTable(file) {
await init();
const arrayBuffer = await file.arrayBuffer();
const arr = new Uint8Array(arrayBuffer);
const arrowIPC = readParquet(arr);
const dt = aq.fromArrow(arrowIPC.intoIPCStream());
return dt;
}
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