@mourner's suncalc for heroku... moved to https://github.com/RandomEtc/suncalc-api

Solar Path

This chart displays the Sun’s path across the sky for the current day, based on the viewer’s geolocation, using a stereographic projection that places the horizon as an outer circle and radiating azimuth lines. A red dot marks the Sun’s present azimuth and elevation, with hourly ticks along its trajectory. The visualization uses D3 v3’s `d3.geo.projection` and `d3.geo.path` for rendering, while a custom solar calculator computes positions from NOAA equations. It updates every second and includes a geolocation prompt to determine the user’s coordinates.

59% match

Gist ca8ce8dbd8dbba7b501860f3d569f019

This example demonstrates a lightweight Express server that acts as a CORS proxy for a joke API, enabling browser-based requests to bypass cross-origin restrictions. The code uses the `express` and `request` libraries to define a route, `/jokes/random`, which forwards requests to `https://joke-api-strict-cors.appspot.com/jokes/random` and relays the JSON response back to the client. A middleware sets the `Access-Control-Allow-Origin` header to `*`, allowing any frontend to access the proxied data. The server listens on a configurable port, defaulting to 3000, and handles errors by returning a JSON error object. This setup illustrates a simple server-side solution for enabling client-side data fetching from a restricted external source.

115Dkatz

59% match

Node + MySQL + JSON

This example demonstrates a Node.js server that serves JSON data from a MySQL database to a front-end visualization. It sets the server’s timezone to UTC and uses Express to handle HTTP requests, with the `connect-gzip` middleware compressing responses. A GET endpoint for `/things/:id.json` queries a MySQL table named `things` via the `mysql` client, selecting fields like `name`, `favorite_color`, and `airspeed_velocity` based on the numeric ID from the URL, then returns the result as JSON. The code shows a direct pipeline from database query to API response, ready for consumption by a client-side chart.

55% match

Gist 05471e1965de232f4434a8624c8949dc

This example demonstrates a minimal Express.js server that serves player data from a SQLite database, exposing endpoints for retrieving all players or looking up a single player by email. The backend uses `express`, `body-parser`, and the `sqlite3` library, with an async utility function (`getPlayers` or `getPlayerByEmail`) handling database queries. Although no charting or visualization library is present, the code illustrates a typical API structure for feeding data to a front-end visualization. The root route returns a plain JSON message, while `/players` and `/playerByEmail` respond with JSON arrays or objects, showing how raw data would be delivered for subsequent graphical rendering.

WWill Carter

55% match

Solar Analemmas

This visualization shows hourly solar analemmas, the figure-eight paths traced by the Sun’s position at each fixed time of day, as seen from San Francisco during 2014. The background is a stereographic projection of the celestial sphere, rendered with d3.geoCircle, d3.geoGraticule, and d3.geoPath, with compass labels and altitude ticks. Twenty-four red paths, one per hour, are computed by the solar-calculator package and projected via a custom flippedStereographic function. The SVG output uses D3 v4 selections and data joins over hourly timestamps.

Gist 75fe6f98cacb874f8d9ebce7248b1b66

This example presents a web-based client-server application that serves static files and handles socket connections. The server is built with Express and Socket.IO, listening on a configurable port, and delegates all routes to a single `index.html` file. It uses the `body-parser` middleware for JSON parsing and the `path` module to resolve file locations. The rendering approach is not specified, but the code clearly establishes the infrastructure for delivering a front-end visualization, with the server acting as the backbone for real-time communication and static asset delivery.

RRonolibert

The Sun’s View of the Earth

This example shows an orthographic projection of Earth from the Sun’s perspective, with the day-night terminator updated every second. The code uses d3.geo.orthographic, d3.geo.path, and d3.json to load TopoJSON world land data, rendering land as a single SVG path. A red dot marks the Sun’s position. Solar declination and equation of time calculations from NOAA drive the projection’s rotation, animating the view via setInterval and the rotate method.

Minimal node.js server to pass Twitter API responses through JSON parse and stringify

This example demonstrates a minimal Node.js HTTP server that acts as a proxy for Twitter API requests, forcing JSON responses to pass through `JSON.parse` and `JSON.stringify`. It shows how to round-trip JSON data to validate or reformat it before sending it to the client. The server uses the built-in `http`, `https`, and `url` modules to listen on port 1337, filter URLs ending in `.json`, and forward those requests to `api.twitter.com`. The response is accumulated in a `Buffer`, parsed, and re-stringified before delivery, with error handling included.

RRandomEtc