abreeson

@abreeson·3 public vizzes

Loading and Parsing CSV Data

This example demonstrates how to load and parse CSV data using D3 v7, displaying a summary of the dataset's size and structure. The code fetches a CSS Named Colors CSV file from a GitHub gist using `d3.csv`, then computes and presents the total kilobytes, row count, and column count in a large `<pre>` element. The visualization highlights the parsed result through simple text output, showcasing the asynchronous data-loading pattern with Promises and the `d3.csvFormat` API for measuring data size.

Jul 13, 2021

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Mouse Follower

A single black circle tracks the mouse in real time within an SVG canvas. The example uses React's `useState` and `useCallback` hooks to capture the mouse position via the SVG `onMouseMove` event, updating the circle's `cx` and `cy` attributes. The visualization demonstrates a minimal interactive pattern, relying on React for state management and D3 v5 only for SVG rendering support, with no data source beyond the live pointer coordinates.

Jul 13, 2021

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Smiley Faces

A grid of randomly generated smiley faces, each with a yellow circular head, black outlined stroke, two eyes, and an arc-shaped mouth, demonstrates the reuse of a modular face component. Using React to compose SVG elements, the code leverages D3's `arc` generator to define the mouth path, while `d3.range` creates a 6-by-3 array of faces. Each face varies its stroke width, eye offset and radius, and mouth dimensions through randomized parameters passed as props, showing how declarative components can produce varied visual output.

Jul 8, 2021