The dim: parameter defines the diameter of a viewing circle centered on the coordinate. While the default unit of measurement is metres, the km suffix may be appended to indicate kilometres.


GeoHack uses dim: to select a map scale such that the viewing circle appears roughly 10 centimetres (4 in) in diameter on a 72 dpi computer monitor. If no dim:, type:, or scale: parameters are provided, GeoHack uses its default viewing circle of 30 kilometres (19 mi).


Samples
Subject View diameter Markup Result
Western Hemisphere 10,000 kilometres (6,200 mi) {{coord|0|N|90|W|dim:10000km}} 0° N, 90° O / 0°N,90°W / 0; -90
Ohio 400 kilometres (250 mi) {{coord|40.5|-82.5|dim:400km}} 40° 30′ N, 82° 30′ O / 40.5°N,82.5°W / 40.5; -82.5
Dresden 20,000 metres (12 mi) {{coord|51.033|13.73|dim:20000}} 51° 01′ 59″ N, 13° 43′ 48″ E / 51.033°N,13.73°E / 51.033; 13.73
Statue of Liberty 100 metres (330 ft) {{coord|40.6892|-74.0445|dim:100}} 40° 41′ 21″ N, 74° 02′ 40″ O / 40.6892°N,74.0445°W / 40.6892; -74.0445