dr. yichun xie, professor and director institute for geospatial research and education eastern...
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Dr. Yichun Xie, Professor and Director
Institute for Geospatial Research and Education
Eastern Michigan University
USGS-GLSC, Ann Arbor, MI
December 12, 2002
Projecting Urban Land Use Changes:
DUEM - Dynamic Urban Evolution Modeling
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Field
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dead
inactive
Initial Landuse Units
Viability (age) check
Neighbor condition check
Active seeds
Transportation condition check
Site selection for new growth
Land use type for new growth
Regional control & policy check
Neighbor check at new site
Transp. check at new site
A new landuse unit generated
Entire system check & update
New Landuse UnitsNot successful
simulations
A successful simulation
a new round simulation
Gen
erat i ng n
ew grow
thA
ccep
tin
g n
ew g
row
th
Invalidating new grow
th
A Flowchart of DUEM Simulation Procedures
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A Flowchart of DUEM Software Running Procedures
Turn on constraint Factor
Create environment
Load constraint grid
Load initial landuse file (grid)
Setup age property
Load simulation rules
Load active seeds (landuse units)
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Turn on constraint Factor
Create environment
Load constraint grid
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A Flowchart of Creating the Regional Constraint Grid through Spatial Analysis
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Load initial landuse file (grid)
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The Initial Landuse File Defines the Background of a Simulation
Background
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Setup age property
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Load active seeds (landuse units)
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Load simulation rules
% GeoCA-Urban Rule Parameters:Blank Vacant Land 255255255StreetNode Street Node 139000000 0 0 1.00 2.00 2.00 150 100 150 100 150 100 150 100 4 3 2 10 60 70T 4100 50 0StreetVertex Street Vertex 139000000House Housing 255173091 8 30 3000 0 1.00 2.00 2.00 125 125 125 125 125 125 125 125 5 2 0 95 0 5 95 0 5Industry Industry 123123192 25 20 3000 0 1.00 2.00 2.00 125 125 125 125 125 125 125 125 15 15 40 10Commerce Commerce 255000000 30 10 3000 0 1.00 2.00 2.00 125 125 125 125 125 125 125 125 10 15 0 10Others Others 000000000
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How to Define Simulation Rules Graphically - Street Node As an Example - 1
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How to Define Simulation Rules Graphically - Street Node As an Example - 2
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How to Define Simulation Rules Graphically - Housing Landuse As an Example - 1
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How to Define Simulation Rules Graphically - Housing Landuse As an Example - 2
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