Measurements 
The measurements of the pattern areas and the ground floor 
space have been made using an areal pollet shown in figure 
1. The above measurements have been calibrated to the total 
areals and ground floor space of the traffic zones, which 
were measured separately and independently in the preliminary 
interpretation, This was done in order to avoid the accumulat- 
ion of measuring errors, 
In order to etimate the population growth and the change in 
land use between 1975 (census year) and 1977 ground floor 
space and the main land use distribution (in 4 cathegories) 
were measured both from 1975 and 1976 material, 
The measurement of the average number of stories was done with 
a special procedure, in which the use of stereoscopic viewing 
of aerial photos was essential. It is difficult to Say whether 
this procedure is à procedure of measurement or an estimat- 
ion procedure, The measurements were done in the actual pat- 
tern in the field identifying a sufficient number of buildings 
both in the terrain and in the photos. Having the direct field 
observations as calibration points the average number of 
Stories within a pattern was estimated by determining the per- 
centage of the ground floor space belonging to each height 
class of buildings, for example: 
- 10% 35 stories 
- 20% 2 stories 
- 70% 1 stories 
average 1,4 stories 
The total floor space of the pattern was calculated a 'ording 
to this and ihe measured ground floor Space, 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
    
    
     
  
    
   
bed Sd | Rd 
uk ub Ni 
re e 2? 
eld Ra