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Slippy maps are the map implementation that is now practically universal. Large maps, that would normally not fit on your screen, are split into smaller images, or tiles. Only the tiles that fit in your window display, and the rest are hidden from view. As you drag the map, other tiles display, making it seem as if you’re moving around a single large map. You might have also seen this done with high-resolution photographs.


Cover of Visualize This: The FlowingData Guide to Design, Visualization, and Statistics


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