Loading and Parsing CSV Data

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Loading and Parsing CSV Data

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Last edited Jun 23, 2025

Created on Aug 1, 2024

This example demonstrates how to load and parse CSV data using D3’s `csv` function, then display each parsed row as a JSON string in a `pre` element. The visualization uses the `d3-rosetta` library’s `unidirectionalDataFlow` and `createStateField` to manage asynchronous loading states. Data comes from the Iris dataset in `data.csv`, with numeric fields converted via a `parseRow` function. While loading or on error, the chart remains empty; once parsed, rows render instantly.

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