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Loading with React & D3

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Kkosakase
Last edited Feb 27, 2021
Created on Feb 27, 2021

This example demonstrates how React handles asynchronous data loading with D3. The App component initializes state with null, then uses useEffect to fetch a CSS named colors CSV from a GitHub gist via d3.csv, updating state once the data arrives. While loading, the screen displays the text "loading"; afterward, it renders a message summarizing the dataset’s size in kilobytes, row count, and column count, computed using d3.csvFormat and the data’s columns property. The visualization uses React’s useState and useEffect hooks with D3’s csv parser, rendering output as SVG-backed React elements.

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