Strand 2: Basic Spatial Analysis Function in GIS

Question 1

What is Digimap?

Answer 1

An EDINA service that allows users to view and print maps

Question 2

What is Mastermap Download?

Answer 2

Allows you to find, select and download Topography and Integrated Transport Network (ITN) data

Question 3

What is the Topography layer?

Answer 3

A large-scale topographic database that offers the most detailed mapping available from UK

Question 4

What are the 9 themes of the OS Mastermap Topography layer?

Answer 4

1. Admin Boundaries
2. Buildings
3. Land
4. Water
5. Rail
6. Roads, tracks, paths
7. Structures
8. Heritage and Antiques
9. Terrain and Height

Question 5

What is the OS Map ITN and what does it include?

Answer 5

Definitive road network dataset includes: Mini Roundabouts, Traffic Calming, Bridge Heights, One way roads, vehicle restriction, vehicle type access and time restrictions

Question 6

What is Geocoding?

Answer 6

• Assigning X-Y coordinates to ‘something’ such that it can be plotted on a map
• The process of adding geographic information to a file or data base so that its objects can be displayed on a map

Question 7

How is Geocoding typically shown as on a map?

Answer 7

A point on a map

Question 8

What is a real world example of geocoding

Answer 8

Tracking phone location

Question 9

What is Reverse Geocoding?

Answer 9

• Process of back coding of a point location (x,y) to a readable address or place name
• Uses already known x,y to find the nearest readable address

Question 10

What is a real world example of Reverse geocoding?

Answer 10

• Emergency services

- Business/ Social media e.g Facebook Check-in

Question 11

What have Geocoding and reverse geocoding enabled?

Answer 11

Geofencing

Question 12

What can Geofencing be used for?

Answer 12

1. Business deals

2. Location reminders

Question 13

What can GeoConvert do? (UK Data service)

Answer 13

Converts a post-code to an XY coordinate such that it can be plotted

Question 14

What are the 4 basic spatial analysis methods using MapInfo?

Answer 14

1. Measuring lengths, perimeters and areas
2. Selection/ Querying
3. Buffering
4. Map Overlay

Question 15

What is Map Overlay?

Answer 15

Counting points in one layer with respect to polygons in another layer

Question 16

What is querying? (Key function in Spatial Analysis)

Answer 16

• A request to select features or records from a data base
• Often written as statement or logical expression
• Associated with buffering
• Uses features in one layer to select features in another

Question 17

What are the different types of spatial queries?

Answer 17

1. Select by location
2. Select by attribute
3. Interactive

Question 18

What are the 4 different type of selection tools in MapInfo?

Answer 18

1. Marquee
2. Radius
3. Boundary
4. Polygon

Question 19

Define buffering

Answer 19

Measured distance outward from a line, point or polygon to produce a circular zone or a corridor around a feature.

Question 20

What is Point-in-Polygon?

Answer 20

Form of map overlay e.g how many hospitals are there within each Local Authority

Question 21

What is Geofencing?

Answer 21

A virtual perimeter for a real world geographic area
Use of GPS and smartphones to create virtual boundaries
By accessing locations and pinpointing locations, shops can send messages/notifications to users once they’re in the vicinity of a shop to remind them/inform them of certain events/offers