Loading and Parsing CSV Data

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Loading and Parsing CSV Data

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Last edited Mar 17, 2021

Created on Mar 7, 2021

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This example demonstrates loading and parsing CSV data by displaying summary statistics about the parsed dataset. It shows the file size in kilobytes, the number of rows, and the number of columns for a CSV of slum population data loaded from a GitHub gist. The code uses `d3.csv` with a Promise-based `.then()` callback to fetch and parse the remote CSV file. Alternatively, commented-out code shows the same process using the Fetch API with `async`/`await` and `d3.csvParse`, highlighting two approaches to asynchronous data loading in D3 v5 and React.

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A program that loads and parses some CSV data: CSS Named Colors.

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