loading_data_NH_2

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loading_data_NH_2

✓ Published3🌍 Public

Last edited Jan 23, 2023

Created on Jan 23, 2023

This example demonstrates asynchronous data loading with D3 v7, displaying the contents of a CSV file as formatted JSON text in a pre element. It uses `fetch()` to retrieve `data.csv`, `csvParse` from D3 to convert the raw CSV string into an array of objects, and then iterates through the parsed data to coerce the numeric columns (`sepal_length`, `sepal_width`, `petal_length`, `petal_width`) from strings to numbers. The visualization implements a unidirectional data flow where a `setState` function updates the application state, triggering a re-render that initially shows "LOADING" before the fetched data appears.

AI-generated description

A circle that follows the mouse using unidirectional data flow.

MIT Licensed

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