Baidu · 2017–2019

Mapv — Spatial Data Visualization SDK

Open-source canvas/WebGL visualization library for geospatial data: heatmaps, point clouds, animated flows, choropleth.

new mapv.baiduMapLayer() · heatmap

live · canvas / webgl

Real mapv on Baidu Map GL · 5,400 points across 6 Beijing hotspots · gaussian heatmap, midnight style.

What it is

Open-source spatial-data visualization library used across Baidu Maps Open Platform. Renders heatmaps, point clouds, animated origin-destination flows, choropleth, and clustered markers on a shared Canvas / WebGL pipeline.

What I contributed

Performance work on the canvas renderer (binned heatmap, grid aggregation).
Animated flow layer — bezier paths with phased particle streams.
Gallery samples + docs for the public-facing site.

The demo above

Reimplements the heatmap path in ~200 lines of canvas: ~1,600 points with a 12-pixel binning kernel and a mapv-style cool→hot color ramp. Same algorithm, no library — just the math.