Table 1 Used digital map data and thematic maps areas in the figure is pilot areas which corre- 
Data format |Thematic map spond to four sheet of 1/25000 scale map about 
Raster digital map data 25000(raster image) 20k : 
: 2 m wide to 20km long. 
Grid digital map data 50m mesh (altitude) 5 
Vector dangerous areas for avalanche 
dangerous areas {or steep slope 4. OUTLINE OF DEVELOPED SYSTEM 
| dangerous valley for debris flow 
| dangerous areas for landslide 
Kexerve arcas for wild animals 4.1 Used thematic maps and digital map data 
areas for city planning : = . 
buried cultural properties Table.1 shows used thematic map and digital . 
park etc Map Data. Digital map data 25000(raster image) 
= 
: : extract a river and bi 
54 atributo, inout, into combine the component watershed from digital 
database | 
altitude data | 
Y Y | I 
add the ID to attribute base map input into computer 
data maps made by own system ; 
input into computer 1} 
1 t 
data map made by other system 
input into computer r 
Y I 
add the ID to map data for b 
connecting the data base 
S 
run 
, v ‘ 
calculation of the mass of 
display and undisplay Soil and estimation of number display of attribute access 
of soil saving dam 
x display and get ID make condition of 
= undisplay el get data ID access by SQL 
access of data * * 
base by using ID access of data access of data 
Y base by using ID base by query 
get property for | p 
the watershed 
get data get data 
Y No effi 
| calculation of * | 
| soil mass display 
Yes error Yes 
v i message 
4d estimation of size 
| and number of soil display on the display on the 
saving dam map only the data map only the data 
corresponded with corresponded with 
the condition the condition | 
ID:Identification 
SQL:Structured QueryLanguage 
| Fig.3 Flow of pilot system | Fi 
610 Intemational Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998