Home▸Algorithms & AI▸GPS Map Matching — Score-Field View (2D)

GPS Map Matching — Score-Field View (2D)

Interactive 2D map-matching simulator: watch the live decision field of a GPS map-matching scorer — distance, heading and route-continuity — as a colour-coded Voronoi-like heatmap, while a vehicle's noisy GPS fixes get snapped back onto the correct road.

Algorithms & AI2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

The same map-matching algorithm as the 3D simulator, but rendered as a live decision field: instead of a driving camera, every pixel of the street grid is coloured by which nearby road segment currently wins the distance/heading/continuity scoring function and how confidently. Drag to pan the field, scroll to zoom, and watch the bright bands shift and jump as you change GPS noise, heading weight and the distance-tolerance σ_d — a direct view of the classifier boundary that a real turn-by-turn app's map-matcher relies on but never shows you.

⚙ Under the hood

A 2D score-field visualisation of GPS map-matching: instead of a driving camera, every point of the street grid is coloured live by which nearby road segment currently wins the distance/heading/route-continuity scoring function and how confidently, while a vehicle's noisy GPS fixes get snapped back onto the correct road on top of the field — pan by dragging and zoom with the scroll wheel.

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2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install