Loading and Parsing CSV Data

follow the mouse

A single circle follows the mouse cursor across a 960 by 500 SVG canvas. The example demonstrates interactive SVG rendering in React, updating the circle's `cx` and `cy` attributes on every `MouseMove` event. It uses React’s `useState` hook to store the cursor's client coordinates and re-renders the circle accordingly. The code relies on React 17 and ReactDOM to manage the SVG element, with no D3 functions invoked beyond the imported `arc`, which is unused in the final visualization.

Wwl328Weiminli

Loading Data with React

A circle follows the mouse cursor across a 960 by 500 SVG canvas. Built with React, the app tracks mouse movement via an `onMouseMove` handler, storing coordinates in state and updating the circle’s `cx` and `cy` attributes. ReactDOM renders the component, while D3 is loaded but unused in this example.

KKazyManazy

Mouse Follower

A circle follows the mouse cursor across an SVG canvas in this React-based visualization. The example uses React's `useState` and `useCallback` hooks to track `clientX` and `clientY` coordinates from a mouse move event, updating the circle's `cx` and `cy` attributes in real time. Rendered with D3 v6 for SVG elements and React 17, the circle starts centered at (480, 250) with a radius of 30 pixels. No data source is involved; the visualization demonstrates interactive event handling and state-driven positioning.

Ssatyenataagyaa

Loading Data with React & D3

This example shows a simple interactive visualization where a circle follows the mouse cursor across an SVG canvas. React state tracks the cursor's current x and y coordinates, updating the circle's `cx` and `cy` attributes on every mouse movement. The code combines React’s `useState` and `useCallback` hooks with ReactDOM to manage the UI, while the SVG scene renders a single circle element whose position is bound to the live mouse data. The interaction is driven by the `onMouseMove` event handler on the SVG, demonstrating direct state-to-rendering synchronization within a React-D3 pairing.

SSamirAhma

Interaction with React: Mouse follower

A circle follows the mouse cursor within an SVG canvas. The example uses React's `useState` and `useCallback` to track the cursor's `clientX` and `clientY` coordinates, updating the circle's `cx` and `cy` attributes on every `onMouseMove` event. The SVG and circle are rendered directly through ReactDOM, with no D3 visualization logic, though the D3 library is loaded in the page. The interaction is purely event-driven, with the initial circle position centered at width/2, height/2.

EElvira Nassirova

A program that follows your mouse with a circle.

A circle follows the mouse cursor across an SVG canvas, with its position updating in real time as the pointer moves. The code uses React's `useState` hook to track the cursor's client coordinates and re-renders the circle's `cx` and `cy` attributes accordingly. The example imports `range` from d3.v7 and builds an SVG element with a mouse-move event handler that captures the cursor's position. No data visualization occurs; the interaction is purely a demonstration of event handling and state-driven SVG rendering in a React environment.

TTemoSmoev

Mouse Follower

This example shows a single circle that follows the mouse cursor across an SVG canvas. Built with React and D3 v5, it uses React’s `useState` hook to track the cursor’s clientX and clientY coordinates on every `mousemove` event, then re-renders the circle’s `cx` and `cy` attributes to match. The `useCallback` hook memoizes the event handler, and the initial mouse position is set to the canvas center. The rendering uses ReactDOM to mount the SVG, with no external data source.

CChristopher Cleland

Mouse follower

A circle drawn with SVG follows the mouse cursor across a 960 by 500 pixel canvas. The visualization tracks the pointer's absolute client coordinates on every mouse movement event, updating the circle's center position accordingly. Built with React, the example uses the `useState` hook to store the current mouse position and a `useCallback` handler to update it, while the circle itself is rendered as an SVG `<circle>` element. The code relies on React 18 and D3 v7 only for DOM rendering, with no data or additional D3 visualization APIs involved.

PPyotr Grigorchenko