1. Maps, Projection and Scale
MS. PATTEN
2010

2. What is a map?
a graphic representation of the
real world
 Title
 Orientation
 Date
 Author
 Legend
 Scale
 Grid

3. What are the two main types of maps?
Reference Maps Thematic Maps
 show the locations of a  emphasize a particular
variety of features theme or special topic
Counties Dot Map
Roads Choropleth
Countries Proportional Symbol
Topographic Isorithmic
Cartogram

4. Reference Maps: West Virginia Counties

5. Reference Maps: Minnesota Roads

6. Reference Maps: South American
Countries

7. Reference Maps: Topographic Map

8. Thematic Map: Dot Map

9. Thematic Map: Choropleth Map

10. Thematic Map: Proportional Symbol

11. Thematic Map: Isarithmic Map

12. Thematic Map: Cartogram

13. What is scale?
Ratio of the distance between two points
found on a map compared to the actual
distance between these points in the real
world.
All map scales are an expression of the
numerical relationship between the MAP and
the LAND that is represented. The MAP unit
is always mentioned first.

14. Types of Scale
Graphic

15. Types of Scale
Verbal
 1 Map Unit = x Land Units
 1 inch = 63,360 inches
 1 inch = 1 mile

16. Types of Scale
Representative Fraction
 1 : 24,000
 1:250,000
 1/50,000

17. Large Scale vs Small Scale