METHOD AND MACHINE FOR GENERATING map data AND METHOD AND NAVIGATION DEVICE FOR DETERMINING route using the map data

摘要

A method of processing positioning data to create map data, the map data comprising a plurality of navigable segments representing segments of a navigable route in the area covered by the map with each segment being arranged to have speed data associated therewith, the method comprising: i. processing the speed data to categorise that speed data into a plurality of predetermined time periods for the navigable segment with which the speed data is associated; and ii. averaging the speed data within each predetermined time period in order to generate a measured speed profile for that navigable segment.