What is G.I.S? Flashcards
Define a continuous data set.
It is a quantitative data set representing a scale of measurement that can consist of numbers other than whole numbers, like decimals and fractions.
Give 4 examples of continuous data?
1) Height
2) Weight
3) Length
4) Temperature
Define a geographical information system.
It is a system that captures, stores, analyses, manages and presents data that is linked to location.
Name two surveying techniques that allow us to capture data to produce traditional maps.
1) Total stations
2) GPS
Define digitisation.
It is the process of generating new data by using Ariel and satellite photographs.
What is one of the quickest ways to capture data?
Is to trace it yourself using digitisation.
What does CCTV do?
Captures information about traffic and pedestrian flows. it also captures directional flow of pedestrians.
How is CCTV done?
Using machine learning and artificial intelligence sitting on the cameras; this is called edge computing.
What can we calculate using CCTV?
1) Speed of vehicles
2) Number of vehicles to analyse our environment, road safety and mobility.
What are postcodes?
They are part of a group of geographies.
What are geographies?
They are different ways in dividing up a country administratively which we can use to demonstrate data.
Give 6 examples of different geographies?
1) Census wards
2) Districts
3) Political boundaries
4) County boundaries
5) Health CCG boundaries
6) Parliamentary constituencies.
What is a polygon?
It is a shape that goes back on itself.
Define a Geo-database.
It is a collection of spatial data files.
What is a shape file?
A shape file is a simple, non-topological format for storing the geometric location and attribute information of geographic features. Every system will understand it.
