UW-Madison GEOG 370 - Projection Mechanics and Distortions (5 pages)

Previewing pages 1, 2 of 5 page document View the full content.
View Full Document

Projection Mechanics and Distortions



Previewing pages 1, 2 of actual document.

View the full content.
View Full Document
View Full Document

Projection Mechanics and Distortions

98 views

Lecture that covers basic map projection mechanics, such as aspect and centering along with the types of distortions


Lecture number:
3
Pages:
5
Type:
Lecture Note
School:
University of Wisconsin, Madison
Course:
Geog 370 - Introduction to Cartography

Unformatted text preview:

GEOG 370 1st Edition Lecture 3 Outline of Last Lecture I Map projections from a round earth to a flat map a Background from a round earth to a flat map b Map projections the basics II Map projection mechanics a Class b Case Outline of Current Lecture II Map projection mechanics a Aspect b Centering III Map projection distortions Current Lecture Quiz 1 o Distance between lines of longitude remains constant at every line of latitude true or false o Line depicting shortest distance between two points multiple choice Map projection mechanics o Guidelines for matching classes with regions Use a cylindrical projection with equatorial regions Conic for mid latitudes like the U S Planar for polar regions o Guidelines for matching cases with map extents Tangent cylindrical and conic projections or secant planar projections place single standard line in center For secant cylindrical conic place the pair of standard lines 1 3 1 3 1 3 o Aspect the orientation of the developable surface to the reference globe Impacts the position of the standard lines and therefore the pattern of distortion across the map Aspects of developable surfaces 3 Normal a map projection with a developable surface that is oriented according to the earth s axis of rotation These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute o Note descriptions of class and case above assume normality a normal aspect results in standard parallels or standard lines that run along parallels o The standard point is at the north or south pole for a normal tangent planar projection Transverse a map projection with a developable surface that is oriented 90 degrees from the axis of rotation o A transverse aspect results in standard meridians or standard lines that run along meridians tangent cylindrical projections only o Example UTM universal transverse Mercator coordinate system A system of 6 degrees longitude zones in a secant



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Projection Mechanics and Distortions and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Projection Mechanics and Distortions and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?