1. Think about the area of Towson.
MINDJOG
Think about the area of Towson.
List 10 subjects about which you could make a map.

2. OBJECTIVE
TWW compare and contract reference maps to thematic maps in order to evaluate the appropriate type of map to use for the display of particular types of information.

3. MENTAL MAP Close your eyes and imagine you are going home.
Draw a mental map of the route you would take home either by walking or by car or bus.
Be prepared to share your mental map.
Your map should include all of the map elements.
You should be prepared to explain your use of the elements including scale, legend, grid, title, and compass rose (direction)

4. Types of Maps
Type of Map  classifies maps according to the different information which the map displays and the method which it chooses to display the information
Two major types of maps:
(1) General Reference Maps
(2) Thematic Maps

5. General Reference Maps
Maps in which the base data of the map is there for its own sake.
The map itself is the information, not the reference point for some other layer of data
EXAMPLES:
Political
Physical
Topographic
Climate Map
Economic or Resource Map
Road Map

6. Political Map
Focuses solely on the state and national boundaries of a state.
Includes location of cities
No topographic features

7. Physical Map
Shows the physical landscape features of a place, including… mountains, rivers, lakes.
Elevation is demonstrated by a change in color (green low and brown being high)

8. Topographic Map
Similar to physical map because it shows different physical landscape features
Display is different through the use of contour lines
Contour Lines and their spacing shows changes in elevation and the rate at which it changes

9. Climate Map
Shows specific climate zones of an area based on the average temperature, precipitation, etc.
Typically uses colors to show the difference in the chosen weather condition.

10. Economic or Resource Map
An economic or resource map shows the specific type of economic activity or natural resources present in an area
Uses of different symbols or colors depending on what is being shown on the map

11. Road Map Most commonly used maps
Shows major and minor highways and roads
Use of important reference including airports, campgrounds, monuments, etc.

12. Thematic Maps Thematic Maps:
(1) use the base data of map (roads, mountains, etc.) as a reference point for some other specific information
(2) provide SPECIFIC information about a particular location
(3) provide GENERAL information about spatial patterns
(4) used to compare patterns on two or more maps

13. Early Thematic Map : CHOLERA

14. Five Major Approaches to Thematic Maps
(1) Choropleth Map
(2) Proportional Symbol
(3) Contour (Isarithmic) Maps
(4) Dot Maps
(5) Dasymetirc Map

15. Choropleth Map
statistical data aggregated over predefined regions, such as counties or states, by coloring or shading these regions
Assumes relatively even distribution across the defined regions

16. Proportional Symbol
The proportional symbol technique uses symbols of different sizes to represent data associated with different areas or locations within the map

17. Dot Map
The dot symbol remains the same size, however, the density and number of dots represents the level of activity for that phenomenon

18. Contour/Isarithmic Maps
Requires some continuous phenomena
Very similar to topographic maps in presentation and structure.
Depicts some other phenomena than land forms

19. Dasymetric Map Similar to choropleth map in its use of color
Does not use predefined regions
The phenomena determines how to color within the lines

20. Using the Mindjog
Is the information which you want to display going to be on a general reference map or a thematic map… which particular reference or thematic map?
General Reference Map
Political
Physical
Topographic
Climate Map
Economic or Resource Map
Road Map
Thematic Map
(1) Choropleth Map
(2) Proportional Symbol
(3) Contour (Isarithmic) Maps
(4) Dot Maps
(5) Dasymetirc Map