timeline-functions

Visualize various periodic functions on a scrolling timeline. Values are provided through Socket.io and displayed using D3.js.

A Node Express server hosts a static webpage and a Socket.io feed. The feed continuously broadcasts output values for different periodic functions - sine, square, triange, etc. - to any listening clients. The webpage connects to this feed and subscribes to one of the function channels, then displays the incoming values on a timeline chart.

Setup

Node.js is required to run this application.

# Clone this repository
git clone https://github.com/rhammell/timeline-functions.git

# Go into the repository
cd timeline-functions

# Install required node packages
npm install

# Start node development server
node app.js

Usage

With the development server running, open a browser and browse to localhost:3000 to view the web interface. Function values are plotted versus their timestamps to create a continuous line chart.

Select options allow users to control which function is displayed, timeline length, and if datapoints are shown.