loading and parsing CSV data 2

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loading and parsing CSV data 2

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Last edited Feb 4, 2022

Created on Feb 4, 2022

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This example demonstrates the basic pattern of loading and parsing a CSV file in D3, displaying the number of rows, columns, and approximate file size in kilobytes as plain text on a large-format `<pre>` element. The code fetches a remote CSV file from a GitHub gist using `d3.csv`, then chains a `.then` callback to process the parsed data. It reports `data.length` for rows, `data.columns.length` for columns, and measures the output of `d3.csvFormat(data)` to estimate the original data size, updating the DOM via `textContent`.

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A bare minimum HTML page demonstrating use of CSS and JavaScript.

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