Download - Suitability Modeling: Best Practices
Suitability ModelingBEST PRACTICES
GRETCHEN N. PETERSON, PETERSONGISAuthor of GIS Cartography: A Guide to Effective Map Design
What is suitability modeling?
What is suitability modeling?
Input criteria considerations
What is suitability modeling?
Input criteria considerations
Converting to a common scale
What is suitability modeling?
Input criteria considerations
Converting to a common scale
How to weight criteria
Suitability ModelingHabitat Suitability Modeling
Weighted Summationweighted overlay
multi-criteria evaluation
Multi Criteria Decision Analysis
MCDA
test scores
test scoresmedian age
test scoresmedian ageeducational attainment
test scoresmedian ageeducational attainment
comprehensiveness of data
converting to a common scale
test scores
0-100%
percentage
median age
0-100
years
educational attainment
high school, some college, etc.
categorical
decision maker
iteration
anonymity
documentation
Delphi
rankingrating
trade-off analysispairwise comparison
1 Educational attainment
2 Median age
3 Test scores
ranking
50 Educational attainment
40 Median age
10 Test scores
ratingpoint allocation
100 Educational attainment
75 Median age
20 Test scores
ratingratio estimation
100 5 Educational attainment
75 3.75 Median age
20 1 Test scores
ratingratio estimation
9.75
100 5 0.51 Educational attainment
75 3.75 0.39 Median age
20 1 0.10 Test scores
ratingratio estimation
9.75 1.00
trade-off analysis
A is better than B
B is better than C
pairwise comparison
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
X
X
X
Thomas L. Saaty
pairwise comparison
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
X
X
X
93
6
pairwise comparison
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
1
1
1
93
6
pairwise comparison
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
1
1
1
93
61/3
1/9 1/6
pairwise comparison
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
1
1
1
93
60.33
0.11 0.17
pairwise comparison
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
1
1
1
93
60.33
0.11 0.17
1.44 164.17
normalized comparison matrix
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
1/1.44
1/4.17
1/16
9/163/4.17
6/160.33/1.44
0.11/1.44 0.17/4.17
normalized comparison matrix
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
0.69
0.24
0.06
0.560.72
0.380.23
0.08 0.04
normalized comparison matrix
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
0.69
0.24
0.06
0.560.72
0.380.23
0.08 0.04
average
normalized comparison matrix
educ
atio
nal
atta
inme
nt
medi
an a
ge
test
sco
res
educational attainment
median age
test scores
0.69
0.24
0.06
0.560.72
0.380.23
0.08 0.04
0.67
0.28
0.18
Riparian Threat Level
Rip
aria
n Q
ual
ity
focus effort here
high
hig
hlo
w
low
Quality Model
Canopy density 0.317
Stream cover 0.200
Riparian width 0.183
Understory 0.183
Slope 0.117
Threat Model
Encroachment 0.690
Landscape Type 0.251
Understory 0.059
GIS and Multicriteria Decision Analysis
By Jacek Malczewski
PetersonGISGretchen Peterson
www.petersongis.com