International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B3. Istanbul 2004 
3. Pilot Study subway network. Figure 3 displays position of 194 
3.1 .Data construction for study area subway station except some subway station and 
Study area is Seoul city that use subway more than buffer function is used to establish buffer zone for 
average 5 million in a day. Figure 1 shows 3 subway station. 
dimensions view of study area. Figure 2 is Seoul City 
  
that 
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| 
e of 
and 
a. 
It of 
Figure 1. Study Area 
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hose T 
Ro NN 
Son Ji 
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A = =“ 
= s € 
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a s = 4 
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ition 
ea is Figure 2. Location of Subway 
571