520 
Aydin, Toprak, Baturayoglu 
1320m. In slope histogram, the preferred areas have a slope of 4-10 degrees. The aspect histogram suggests two preferred directions. 
The maximum concentration is 9% at 130-140 degrees and the second highest value is 3% at 40-50 degrees. In addition, the 
difference between the maximum and the second highest values of concentration is very high. 
N-S 
E-W 
N-S 
Figure 10: The histogram differences of sub-surface features for elevation (top), slope (middle) and 
aspect (bottom) to be used as decision rules to identify preferred locations of the landscape.