Methodology

MCE (Multi-Criteria Evaluation) technique was used to help determine the most suitable areas for a Chinese restaurant.

In MCE technique, criteria are classified into two types, factors and constraints. Factors are conditions that enhance or detract from the suitability of a specific alternative for the activity under consideration. Factors can be rescaled to a continuous scale of suitability from 0 (the least suitable) to 255 (the most suitable). Constraints serve to limit the alternatives under consideration. Constraints are expressed in the Boolean form, 0 (unsuitable) or 1 (suitable). All the constraints and factors can be established through Macro Modeler in Idrisi. Click to see Macro Modler.

In this project the constraints and factors are:

• Landuse_reclass Constraint
• Chinese_density Factor
• Family_income Factor
• Commercial_CenterDist Factor
• Skytrain_stationDist Factor
• BusExchange_centerDist Factor

Landuse_reclass Constraint:The restaurants must be located in commercial or commercial - residential/mixed areas.

Macro Modeler Procedure:
Reclass file:
DESCRIPTION Old Value New Value Transportation, Communication and Utilitie 0 0 Lakes and Water Bodies 1 0 Open and Undeveloped 2 0 Recreation and Protected Natural Areas 3 0 Protected Watershed 4 0 Residential - Rural 5 0 Residential - Single Family 6 0 Industrial - Extractive 7 0 Institutional 8 0 Commercial 9 1 Residential - Townhouse and Low-rise Apart 10 0 NA 11 0 Industrial 12 0 Commercial - Residential/Mixed 13 1 Agricultural 14 0 Harvesting and Research 15 0 Residential - High-rise Apartments 16 0
Input: gvrd_lu map		Output: landuse_reclass map
(Click on an image to enlarge.)

Chinese_density Factor:The restaurant had better be located in the areas with high Chinese population density.

Macro Modeler Procedure:
Factor standardization:
Membership Function Shape Membership Function Type Control Points Monotonically increasing Sigmoidal a:0; b:2000
Input: chinese_pop map		Output: chinese_fuzzy map
(Click on an image to enlarge.)

Family_income Factor:The restaurant had better be located in the areas with high family income.

Macro Modeler Procedure:
Factor standardization:
Membership Function Shape Membership Function Type Control Points Monotonically increasing Sigmoidal a:0; b:100000
Input: family_income map		Output: income_fuzzy map
(Click on an image to enlarge.)

Commercial_CenterDist Factor:The restaurant had better be within 1000 m of Downtown Vancouver, or Metrotown in Burnaby, or Richmond Center, or Coquitlam Center or Surrey Centre.

Macro Modeler Procedure:
Factor standardization:
Membership Function Shape Membership Function Type Control Points Monotonically decreasing Sigmoidal c:1000; d:39422
Commercial_center_distance map		Output: ccenter_fuzzy map
(Click on an image to enlarge.)

Skytrain_stationDist Factor:The restaurant should be within 500 m of any Skytrain station.

Macro Modeler Procedure:
Factor standardization:
Membership Function Shape Membership Function Type Control Points Monotonically decreasing Sigmoidal c:500; d:47087
Skytrain_distance map		Output: Skytrain_station_fuzzy map
(Click on an image to enlarge.)

BusExchange_centerDist Factor Factor:The restaurant should be within 500 m of any bus exchange center.

Macro Modeler Procedure:
Factor standardization:
Membership Function Shape Membership Function Type Control Points Monotonically decreasing Sigmoidal c:500; d:36735
BusExchange_center_distance map		Output: BusExchange_center_fuzzy map
(Click on an image to enlarge.)
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