EXISTING MAPS 
  
MANUSCRIPT PREPARATION 
  
  
  
DIGITIZATION 
  
MANUAL 
RASTER SCAN 
  
  
  
  
RASTER | DATA 
  
1 
VECTOR | DATA 
  
  
AERIAL 
PHOTOGRAPHY 
  
  
  
  
I 
  
  
DIGITIZATION 
PHOTOGRAMMETRIC 
MAP COMPILATION 
- FEATURE CODING 
= REVIEW / EDIT 
  
  
  
  
RASTER DATA PROCESSING 
RASTER DATA 
REVIEW / EDIT 
- RASTER TO VECTOR e 
CONVERSION 
RAW VECTOR DATA 
REVIEW / EDIT 
POST PROCESSING 
  
  
  
  
  
TAGGING 
(FEATURE CODING) 
REVIEW / EDIT 
  
  
  
y 
VECTOR | DATA 
  
  
SPATIAL CODING 
TOPOLOGICAL ENCODING 
DATA STRUCTURE 
REVIEW / EDIT 
  
  
  
  
  
  
DATA STORAGE 
AND 
MANAGEMENT 
  
  
  
FIGURE 2. ANALOG TO DIGITAL CONVERSION MODEL 
514 
fu