International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004 
  
5. CONSIDERATIONS OF THE USE OF OTHER 
VARIABLES ON WEB MAPS FOR NAVIGATION 
PURPOSE 
For the purpose of navigation, maps can be used for positioning 
(i.e. displaying current location on a digital map), navigation 
(i.e. displaying the current position and destination) and route 
guidance (i.e. displaving position, destination and route to 
destination). 
The current position (of vehicle or a person) can be highlighted, 
e.g. using a small buffer (Figure 3). For navigation with 
planned route, different parts of the route can be highlighted in 
different colour according to the current position (Figure 4). 
An example of using perspective symbol for landmark was also 
shown in Figure 5 (circled in red), because of the importance of 
landmarks for navigation purpose (Burnett, 2000). The map 
provided flexibility to the users to customise their use by 
activating different layers such as car park and restaurants 
locations. Highlight of text symbols arc also possible to create 
the difference in prominence. Figures 6 and 7 illustrate the 
highlighting of building names and road names by changing the 
colour and increasing the font size. Blinking system can be 
used for dangers. 
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Figure 4 Road scgments ments hichlichred by large buffer zone 
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Figure 5 Mode of navigation with planned route and use of 
perspective symbols 
4f? Mapinia Professional - [Testing] 
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China Resources | 
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Figure 7 Highlight by changing the colour of text symbol 
6. CONSIDERATIONS OF THE FUNCTIONS OF MAP 
SYMBOLS FOR NAVIGATION PURPOSE 
Traditionally, maps are static and for views only. However, ! 
web environment, maps could be either static or dynamic, m 
then being subdivided into view only and interactive (Kraak, 
2001). On static view only maps, the function of map symbols 
is to indicate location and thematic meanings. On the other 
hand, for interactive maps, map symbols offer additional 
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