A METHOD AND DEVICE FOR DISPLAYING TRAFFIC DATA

摘要

A method of visually representing traffic flow parameters comprises selecting an area of interest on a map (50), defining cells (51) within the area of interest and extracting data (52) relating to a traffic flow parameter for each cell. A three dimensional representation (26 to 31) of a first traffic flow parameter is applied (54) to the map in the cells in the area of interest and the map is displayed with the three dimensional representation of the traffic flow parameter. The method further comprises extracting data relating to a further traffic flow parameter for each cell; applying to the map in the area of interest an alternative representation of the further traffic flow parameter; and displaying the map with the alternative representation and the three dimensional representation. The alternative representation comprises rendering the degree of transparency to be proportional to the parameter being displayed.