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for crisp sets
⊧
1
if
x
≤
2000
(
)
x
μ
=
⊨
0
if
x
>
2000
⊩
Fig. 4 Membership function
—
water
for crisp sets
⊧
0
if
x
<
4000
⊨
()
μ
x
=
1
if
4000
≤
x
<
20000
⊩
0
if
x
≥
20000
Fig. 5 Membership function
—
roads
Historical and cultural monuments (Hm) (data RA, distance, meter)
Map Algebra
—
Raster calculator (Fig.
6
)
8
<
1
if
x
\
500
15000
x
14500
l
ðÞ¼
if
500
x
15000
:
0
if
x
[
15000
Bike trails (Bt)
—
net density (data RA)
Density
Kernel Density (radius 3 km), normalization
Hiking trails (Ht)
—
—
net density (data RA)
Density
—
Kernel Density (radius 3 km), normalization
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