GEO 106 Study Guide - Summer 2018, Comprehensive Midterm Notes - Time, Postal Code, Land Lot
12 Oct 2018
School
Department
Course
Professor
GEO 106
MIDTERM EXAM
STUDY GUIDE
Fall 2018
Day 3 Notes:
Trade Area Analysis and Service Area Delimitation
- We use models and identify where people come from to use services
Thiessen was a climatologist
- Splitting the room into two technique → Thiessen polygon
- Using the nearby option rather than the further option
- Normative technique - measures the space that is closests to the location
- Example: Y is the location and raw lines to the competitors and block off
the space by 90 degrees half way and now th polygon is the space that is
closest to the location of interest
- Another approach from the polygon is Spotting approach the home depot
where you are identifying where they actually came from rather then assuming
- Basic approach - the line moves closer to the smaller group
- The line draw half way is the line of indifference
- In the gravity model will pull the the small group towards the bigger store
- Basic gravity model you assume that they go to the larger area and the
bigger area
- Converse breakpoint technique
- Example: Whether Station → there are specific points of stations and your postal
code is using the nearby station to cast your wheather values for the day
- Spatial interpretation - interpreting info based info given
Two Fundamentally different approaches to determining the service of private
and public facilities
- Theoretical (normative) methods: What the service/market areas should be
given assumptions of models. In this approach we assume and model spatial
behaviour
- Spotting technique
- Basic technique
- Converse breakpoint
- What the service areas actually are?
- Where do the customer, patients, patrons, clients actually come from?
- These behavioural approaches are known as customer spotting or market
penetration techniques. They have become much more sophisticated with
‘BIG DATA’ and analytics
find more resources at oneclass.com
find more resources at oneclass.com
Three normative approaches → Theoretical
- Thiessen polygon
- Distance and proximity
- Converse breakpoint method
- Distance and size are important
- Simple gravity model
- Huff model
- Distance, size, probability
- More complex gravity model
- There is a likelihood you will go to the close one but there is still a
likelihood of going to another location
Relevant Spatial concepts
Distance decay & friction distance
Disincentive nature of distance
- Time and money effect
Location & competition (Hotelling model)
- Considers where the market is located (the target) and the competitors
- Have to consider the competitors
Utility of a destination (Distance, Size, attraction)
- Measuring the usefulness of the facility
Unifying and simplifying assumptions of models
- We don’t have the capability to understand the world
- Example: We want to explain a story → therefore we have to simplify variables to
tell the story of how that variable affects the story
Network of polygons
- The space in the polygons is the space closest to the service
- We are identifying the target market
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
We use models and identify where people come from to use services. Splitting the room into two technique thiessen polygon. Using the nearby option rather than the further option. Normative technique - measures the space that is closests to the location. Example: y is the location and raw lines to the competitors and block off the space by 90 degrees half way and now th polygon is the space that is closest to the location of interest. Another approach from the polygon is spotting approach the home depot where you are identifying where they actually came from rather then assuming. Basic approach - the line moves closer to the smaller group. The line draw half way is the line of indifference. Basic gravity model you assume that they go to the larger area and the. In the gravity model will pull the the small group towards the bigger store bigger area.
