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# Apache Parquet data loader

View live: <https://observablehq.observablehq.cloud/framework-example-loader-parquet/>

This Observable Framework example demonstrates how to write a JavaScript data loader that outputs an Apache Parquet file using the `apache-arrow` and `parquet-wasm` packages. The data loader generates a synthetic time-series dataset using a random walk. The data loader lives in [`src/data/samples.parquet.js`](./src/data/samples.parquet.js).
