A streaming data visualization engine for Javascript, Perspective makes it simple to build real-time & user configurable analytics entirely in the browser.

Features

• A fast, memory efficient streaming pivot engine written principally in C++ and compiled to WebAssembly via the emscripten compiler.

• An embeddable, framework-agnostic configuration UI, based on Web Components, and a WebWorker engine host for responsiveness at high frequency.

• A suite of simple visualization plugins for some common Javascript libraries such as d3fc and Hypergrid.

• Integration with Jupyterlab.

• Runtimes for the Browser and Node.js.

Examples

Superstore	A static superstore.arrow demo.
Linked Superstore	An example of <perspective-viewer>s linked through click events.
Dataset Explorer	A configurable dataset performance tester.
Fractal	<perspective-viewer> fractal playground.
Olympics	An example of sharing a single perspective.table among multiple <perspective-viewer>s.
Streaming	A streaming random data demo.
Streaming Stock Trades	A streaming financial data demo.
CSV	Upload a CSV of your own.
NYC Citibike	An example of a join on two real-time datasets, from the NYC Citibike feed.
Real-time cryptocurrency charting	An example that uses the coinbased web socket feed to plot orders in real-time
Financial Data from IEX	An example that uses the IEX cloud api to build a financial dashboard.

Documentation

• Project Site
• Installation
• User's Guide
• Developer's Guide
• Perspective API
• Perspective Viewer API