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

• A fast, memory efficient streaming pivot engine written principally in C++ and compiled to both WebAssembly and asm.js 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 HighCharts and Hypergrid.

• Runtimes for the Browser and Node.js.

• Superstore A static superstore.arrow demo.
• Olympics An example of sharing a single perspective.table among multiple <perspective-viewer>s.
• Streaming A streaming random 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.

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