Pin Map

A spinning globe with markers (pins) with zoom & pan capability using React and D3.

Map data used are pre-built TopoJSON from topojson/world-atlas.

This project was bootstrapped with Create React App.

Features

• Initially renders as a spinning globe with red markers based on locations data.
• Markers disappear when leaving globe projection and reappear when they enter the view.
• When mouse hovers over a marker while spinning, the animation is paused and a tooltip is displayed above the hovered marker displaying the location text from data. When the mouse leaves the marker, the animation resumes.
• When user interacts with globe with pan or zoom, the spinning animation stops.
• While the globe is spinning, or while the user pans or zooms, the land masses are rendered in low resolution. When the user does not interact with the globe and its not spinning, the map is rendered in high resolution.

Libraries used

• d3: Loading JSON, rendering SVG elements, and data update patterns
  • d3-geo: Globe projection, scaling, and mapping coordinates
  • d3-zoom & d3-drag: Map zoom & pan
  • d3-timer: Timer to spin globe
• d3-tip: Location tooltips for markers
• topojson: Topology encoding for map land masses

Installation

Clone repository locally and run:

npm i

Running the app

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

Build for production

npm run build

Builds the app for production to the build folder. It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.