Fernando C. Filho

@fcfilho·5 public vizzes

Fork of Fork of Loading and Parsing CSV Data

This example displays a text summary of the CSS Named Colors CSV file, showing its size in kilobytes, row count, and column count. The page uses d3.csv to fetch and parse the remote gist data, then d3.csvFormat to measure its length. The code also demonstrates alternative approaches with fetch, async/await, and d3.csvParse, though they remain commented out. The D3 v5 library handles the data loading, while a plain HTML `<pre>` element renders the resulting message in large type.

Nov 22, 2021

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Fork of Loading and Parsing CSV Data

This example demonstrates the loading and parsing of CSV data from a remote URL, displaying the file size, row count, and column count as plain text. The code primarily uses D3.js version 5’s built-in `d3.csv` method, which returns a promise that resolves to parsed data. An alternative commented-out approach uses the Fetch API with `async`/`await` and `d3.csvParse` for manual parsing. The data comes from a gist containing CSS named colors, and the results appear in a large-font `<pre>` element.

Nov 17, 2021

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Fork of Mouse Follower

A React application renders an SVG circle that follows the mouse cursor across a 960-by-500 canvas. The component tracks pointer coordinates via the SVG `onMouseMove` event and updates the circle’s center position with React state and `useCallback`. The example demonstrates declarative SVG rendering with React’s `useState` hook, using a fixed initial position at the canvas center. No external data sources are involved; the visualization purely reacts to user input within the browser window.

Nov 16, 2021

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Fork of Let's Make a Face Part I

A static SVG face composed of three circles: a large yellow head with a black outline and two smaller black eyes positioned on a light background. The code uses inline SVG elements with explicit pixel coordinates and stroke properties to define the shapes. It renders to a 960 by 500 canvas and represents a simple, non-interactive visualization of a smiley face’s basic geometry. The example is a direct HTML/SVG implementation without any JavaScript libraries.

Oct 27, 2021

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Fork of Smiley Face Part-3 (React and d3)

This example shows a smiling face rendered as an SVG using React components and D3’s arc generator to draw the mouth. The face consists of a yellow circle for the head, two black eyes, and a curved mouth path created with the `arc()` function from `d3-shape`. The code uses React’s JSX syntax and template literals for the SVG group’s `transform` attribute, positioning elements relative to the center. D3 version 6 is loaded alongside React 16, with all geometry constants defined explicitly in JavaScript.

Oct 27, 2021