Class Notes (836,580)
Geography (946)
GEOG 1HB3 (258)
Lecture

# Maps and Spatial Understanding.docx

2 Pages
108 Views

School
Department
Geography
Course
GEOG 1HB3
Professor
Michael Mercier
Semester
Fall

Description
Maps and Spatial Understanding Gravity Questions • The primary influences over the level of interaction are the size of the two cities and the distance between the cities. (bigger the cities = more interaction, smaller the distance = more interaction) • The distance decay function changes the level of interaction between the two cities. • The distance decay function should vary among cities because the levels of accessibility/connectivity also fluctuate. Maps are two dimensional graphical representations of the world, and they depict spatial relationships. • Communicate information • Analysis of spatial information (made by individuals or companies, subjected to bias) • Socially constructed • Maps are challenging because we are trying to portray a 3D globe on 2D Projection is a mathematical technique for representing a 3D sphere on a 2D map. • Put a paper on the surface of the earth, and shine a light bulb on it. Shadows become the continents. Perfect reflection for the images touching the paper, but there is a distorted image for the images further away from the paper. • Three types of projection; all have varying levels of accuracy and the main forms of distortion are from distance, direction, and the area. 1. Cylindrical projections are projected onto a cylinder that touches the outside edges of the globe. The paper is wrapped around the globe. • Accuracy is greatest at the Equator and declines as you move towards the North and South Poles. 2. Conical projections are projected onto a cone that touches the outside edges of the globe. The cone sits on the mid-latitudes. • Accuracy is greatest in the mid- latitudes, and it declines as you move towards the two poles. 3. Azimuthal projections are projected onto a flat surface that touches the globe at one single poin
More Less

Related notes for GEOG 1HB3
Me

OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Join to view

OR

By registering, I agree to the Terms and Privacy Policies
Just a few more details

So we can recommend you notes for your school.