Geoscience Reference
In-Depth Information
for crisp sets
1
if
x
500
(
)
x
=
μ
0
if
x
>
500
Fig. 3 Membership function
forests
1
l ðÞ¼
500 2
x
1
þ
Forests accessibility (Fa) (data CEDA StreetNet, distance, meter)
Overlay
Fuzzy Membership
Small (midpoint 500, spread 2)
Somewhat
(dilatation) (Fig. 3 ).
s
1
l ðÞ¼
500 2
1 þ
x
Bodies of water (Bv) (data CEDA StreetNet, distance, meter)
Map Algebra
Raster calculator (Fig. 4 ).
8
<
1
if x \
100
4000 x
3900
l ðÞ¼
if 100
x
4000
:
0
if x [
1000
Roads (Ro)
motorways and national roads (data CEDA StreetNet, distance,
meter)
Map Algebra
Raster calculator (Fig. 5 )
8
<
1
2
x
4000
x
4000
if
1
cos p
4000
\ x \
10000
if
1
l ðÞ¼
30000 x
20000
:
10000
x
30000
if
x [
30000
if
0
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