QU b VC 9 whl TW Ww 
value, 
"cent 
e / 
© 
+ 
+ 
-0 60000 
+ 
+ 
-1 00000 -0 80000 
-0 40000 
COMPONENT 2 
1 00000 T 
0 80000 + 
0 60000 + 
040000 + 
020000 + 
-0-00000 + 
-0.20000 0.00000 0.20000 
-0 20000 + 
-0 40000 + 
-0 60000 + 
-0.80000 + 
  
-1.00000 + 
0.40000 
0.60000 
Figure 1. Plot of component pattern for principal components 1 and 2. 
Key: #1: population density, #2: per capita income, #3: median home value, #4: per cent of 
college graduates, #5: NDVI, #6: per cent of urban land use, #7: surface temperature. 
435 
0.80000 
COMPONENT 1 
1.00000 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996