perspective

Perspective is an interactive analytics and data visualization component for large and streaming datasets. Build user-configurable reports, dashboards, notebooks, and applications with a high-performance query engine compiled to WebAssembly, Python, and Rust.

Features

• A framework-agnostic user interface packaged as a Custom Element, which connects to a Data Model in-browser (via WebAssembly) or remotely (via WebSocket, with integration in Python, Node.js and Rust). Includes a data grid, 10+ chart types line, bar, area, scatter, heatmap, treemap, sunburst, candlestick, and more.

• A Data Model API for pluggable engines, enabling Perspective's UI to query external data sources like DuckDB while translating view configurations into native queries.

• A fast, memory-efficient streaming Data Model built-in, written in C++ and compiled for WebAssembly, Python, and Rust. Supports read/write/streaming for Apache Arrow, with a columnar expression language based on ExprTK.

• A JupyterLab widget and Python client library for interactive data analysis in notebooks.

Documentation

• Project Site
• User Guide
• Python API
  • perspective
  • perspective.widget
  • perspective.handlers.aiohttp
  • perspective.handlers.starlette
  • perspective.handlers.tornado
• JavaScript API
  • @perspective-dev/client Browser
  • @perspective-dev/client Node.js
  • @perspective-dev/viewer
  • @perspective-dev/react
• Rust API
  • perspective
  • perspective-client
  • perspective-server
  • perspective-python
  • perspective-js
  • perspective-viewer

Examples

editable	file	duckdb
fractal	market	raycasting
evictions	nypd	streaming
covid	webcam	movies
superstore	citibike	olympics
dataset

Media

@timkpaine	@timbess	@sc1f
@texodus	@texodus

---

The Perspective project is a member of the The OpenJS Foundation.

Copyright OpenJS Foundation and Perspective contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

The OpenJS Foundation | Terms of Use | Privacy Policy | Bylaws | Code of Conduct | Trademark Policy | Trademark List | Cookie Policy