Two engines. One town.

Twin Atlas Detective

Pan one map and its twin follows. Compare their cartographic personalities, locate six mismatched signals, and decide whether linked views make a sharper pair of eyes.

Open the case ↓
Case 0511

The same place is never quite the same map.

Drag either atlas to pan both. Zoom, unlink them if you dare, then tap the hidden discrepancies. On a phone the maps stack, but their viewports remain synchronized.

ZOOM 100% · 6 SIGNALS
Atlas CedarRaster / AJAX
An illustrated map of a coastal Pacific Northwest town
CEDAR RENDERER 2.447 tiles
Atlas SignalVector / FLASH
The same coastal map in a contrasting cartographic style
SIGNAL RENDERER 5.143 tiles
viewport relaycoordinates locked

Discrepancy docket

2005

Before “compare mode” was a button

Jon wired Google Maps and three Yahoo! Maps renderers together so panning and zooming one moved all the others. This little field desk keeps the delightful core of that experiment: comparison becomes useful when every viewport tells the same geographic story at once. Inspired by Jon’s “Google Maps and Yahoo Maps, side-by-side.”

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