Geography Reference
In-Depth Information
the projection properties they maintain and to the projection properties they com-
promise. Finally, you should also be able to distinguish between types of projections
used for different orientations of geographic areas.
Instructions
Using maps from the library or Internet sites that show different types of map projec-
tions (e.g.,
www.davidrumsey.com
), identify at least four different projections. Using
information from Chapter 3 on map projection properties, identify the projection
properties preserved by the map projection and the map projection properties com-
promised by the projection. Compare the orientation of the areas shown on the dif-
ferent maps (north-south, east-west) and the projections used.
Questions
1. What types of projections did you identify? What are the names and sub-
jects of the maps?
2. What projection properties do the maps maintain and what projection prop-
erties do the maps compromise? Make sure to clearly identify the names of
the maps along with the names of the projection and properties.
3. Is there any correlation between the types of projections and the orientation
of the geographic areas shown in the maps?
4.
EXTENDED EXERCISE:
Fundamental Choices
Objective:
Working with maps from the library or the Internet, assess
the choices made in the creation of the maps and the
resulting consequences for geographic representation and
cartographic representation.
Overview
The choices made in creating GI and maps determine what can be done with the GI
and maps. Identify these choices as best you can and discuss alternatives for each
choice.
Instructions
Using maps from the library or Internet sites that show different types of map projec-
tions (e.g.,
www.davidrumsey.com
), identify two different thematic maps. Start out by
describing the purpose, the scale, and the area of the map and then follow the
choices described on pages xx-xx in the textbook. On a sheet of paper, make six
rows for the choices, making sure to leave a place for you to show how a sample
map will look: things or events, patterns or processes, projected or unprojected,
abstract or accurate, few or many associations, scale and areas. In one column for
each row write a few words describing the map's choice and in another column
point out any relationships to other choices.
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