6B-2-2 
center of K.I.T. and that for mountain is the 
area of geographical map in Kanazawa 1/25000. 
2. Data Form and Representation Method 
The method of taking coordinates was shown in 
Fig.l. We regard a road as vector by taking 
coordinates along the centerline shown in Fig.2. 
We model the road close the real one without 
remarkable increasing of data for giving the 
information of width, shapes and sidewalk. We 
plotted the coordinates by digitizer from base 
map of national land 1/2500, and added the 
elevation value from numerical map of 
elevation meshed 50m. The elevation data is 
resampled by affine transform because the 
source of that is 1/25000. And the elevation 
value is resampled by Bi-Linear interpolation 
method. 
1‘ i 
/7 $ 
• >' v 
X\\ 
VA 
VA 
Vfc 
¿JUL: 
n if--- 
i* 
/?’ 
£ 
-*.y à 
fa 
* 1 H 
f 
¡8,0 
jf 
* t 
• / 
V ^ 
l : ‘i if 
Fig.l Plotting method of coordinates in 
previous study. 
\ 
\\ 
V: If' 
\ \ A 
\ 'f 
■fa 
ri 
if 
u 
* f 
A 
\ • \v 
V» V 
\\« M 
V''.. • 
i/ 
i 1 ' 
ht 
if t O 
if 
if 
Fig. 2 Plotting method of coordinates for 
vector data. 
The road is made up by polygon that links the 
coordinates gotten for this method. 
List 1 is an example of vector data. The 
coordinate number is next to the head of ‘ i ‘ and 
x ’. A road consists of this number linked in 
order. Fields of line began to ‘ x ’ are information 
that decide the existence of centerline and 
sidewalk in cross. We created the heads shown 
in Table 1 as the additional data to represent 
the shape of base road, centerline and sidewalk.