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@A-devlab·8 public vizzes

Fork of Pathetic Bar Chart

This example visualizes the top 10 most populous countries as a pathetic bar chart, displaying horizontal bars without any axes or labels. Using React with hooks, the code loads UN World Population Prospects 2019 data via `d3.csv`, then renders SVG rectangles scaled with `scaleBand` and `scaleLinear`. The chart computes bar widths from each country’s 2020 population and positions them vertically with `yScale`. React’s `useState` and `useEffect` manage the asynchronous data loading, while `ReactDOM.render` mounts the visualization.

Jul 17, 2021

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Fork of Fork of Rendering Data with React and D3

This example renders a dataset of CSS named colors as a pie chart, with each slice colored by its corresponding RGB hex value. The visualization loads the data from a CSV file using `d3.csv` and manages the asynchronous state with React’s `useState` and `useEffect` hooks. React renders the SVG paths, while D3’s `pie` and `arc` generators compute the slice angles and path geometry. The chart is centered using an SVG `<g>` transform, and the code includes commented alternatives for manual arc computation.

Jul 17, 2021

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Fork of Rendering Data with React and D3

This example visualizes CSS named colors as a full-screen pie chart rendered with React and D3 v7. It loads color data from a CSV file using `d3.csv`, then applies `d3.pie` and `d3.arc` to generate SVG paths. Each slice is filled with its corresponding hex color value from the dataset. React manages the loading state and renders the SVG elements, while D3 handles the data parsing and geometric calculations.

Jul 17, 2021

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Rendering Data with React and D3

A full-screen donut chart visualizes all CSS named colors, sourced from a CSV file of named color values. The visualization uses React to manage state and render SVG elements, while D3 v7 handles the data loading via `d3.csv` and the pie layout and arc generation with `d3.pie` and `d3.arc`. Each color category is represented by a pie slice filled with its corresponding hexadecimal value.

Jul 17, 2021

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Fork of Vega-Lite API Template

This visualization uses the Vega-Lite API with D3 to plot automobile data, showing each car as a circle positioned by weight and horsepower, colored by origin, and sized by fuel efficiency (mpg). The code loads CSV data from a GitHub gist via D3’s `csv` method, then builds the chart with `vega-lite-api`’s `markCircle` and encodes position, color, size, and tooltip fields. Rendered as an SVG through the Vega renderer, the visualization includes a Vega tooltip handler for interactive inspection.

Jul 16, 2021

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Loading Data with React and D3

This example demonstrates how to load and summarize a CSV dataset in a React application using D3. The interface displays a plain-text report showing the file size in kilobytes, row count, and column count. The code uses React’s `useState` and `useEffect` hooks to fetch data via `d3.csv` from a GitHub gist containing CSS named colors, then formats the result with `d3.csvFormat`. The SVG markup in the HTML file is commented out and unused.

Jul 13, 2021

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Loading and Parsing CSV Data with D3

This example demonstrates loading a remote CSV file and displaying basic dataset statistics. It fetches CSS named colors from a GitHub gist and shows the file size in kilobytes, the total number of rows, and the column count. The visualization uses D3 v7’s `d3.csv` method to parse the data asynchronously, then `d3.csvFormat` to calculate the raw text length, with results rendered to a `<pre>` element. The code also includes commented alternatives using `fetch` and `d3.csvParse`.

Jul 13, 2021

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Mouse Follower

A single yellow circle follows the mouse cursor across the full browser window, updating its position in real time. The visualization uses React hooks, specifically `useState` to track mouse coordinates and `useCallback` to optimize the event handler, with the circle rendered as an SVG `<circle>` element. Mouse movement triggers the `onMouseMove` event, and the React re-renders the circle at the new `clientX` and `clientY` positions on each move.

Jul 13, 2021