The maps cover a zone (100) termed the scale zone. In order to archive, the maps (101-106) are ordered and each map is rotated by a digitising angle, digitised with a scanner and the unuseful portions cut-out therefrom. The maps are referenced to determine the deformation therein, stored in a buffer whilst juxtaposing therewith the digitised, cut-out and referenced maps, and the information from the buffer is memorised on a digital optical disc. In order to read, the map containing a point with specified geometrical coordinates, to be placed at the centre of a display screen, is determined through its contours. …??The invention applies particularly to navigation. …IMAGE…
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