Loading and Parsing CSV Data

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Loading and Parsing CSV Data

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Last edited Apr 25, 2021

Created on Apr 25, 2021

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This example demonstrates how to load and parse CSV data from a remote URL, displaying the dataset’s size in kilobytes, row count, and column count in a large `pre` element. The code uses the JavaScript `fetch` API with async/await to retrieve the text, then parses it with `d3.csvParse`. Alternatively, it shows the simpler `d3.csv` method, which combines fetching and parsing in one step. The source data is CSS named colors from a GitHub gist.

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

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