Figure 1.

A pincushion of unreadable dots (screenshot from [15]). The only way to negotiate this map is to zoom in, but each time the user zooms in, a new server request and server-side rendering of new map tiles must be made, which consumes more time, server resources and bandwidth.

Boulos et al. International Journal of Health Geographics 2010 9:14   doi:10.1186/1476-072X-9-14
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