GIS 342 Final Exam Study Guide
Study online at https://quizlet.com/_cy0xoy
1. Provide three examples of auto- Equal interval (same amount of data in each class), Quan-
matic data classifications in GIS. tile (classifies data based on value, same amount of fea-
Briefly explain the differences be- tures), Equal-Area (each class has the same total approx-
tween these types of classifica- imate area). Natural Break (classes based on gap that
tions. occur in the distribution)
2. (True of False) The data to be True
displayed on a map must be
classified and represented using
graphic symbols that conform to
well-defined and accepted con-
ventions to be able to highlight
spatial patterns.
3. Explain the "modifiable areal unit" The MAUP is when you collect data on an area and aggre-
in the context of areal (polygon) gate that data together, it might not be representative of
classifications and its ecological individual data points. Its ecological implication is drawing
implication? false conclusions from misrepresented data.
4. In your own words, provide a defi- Vertical stacking of spatial information to get a compre-
nition for vector "overlay" in a GIS hensive idea of the area. The main conceptualizations
context. What are the two major are intersect (keeping the overlapping area and combine
conceptualizations of overlays in attribute table) and union (creates new polygons )
GIS?
5. Briefly explain what the dissolve The dissolve operation can be used to take away bound-
operation does and what can it aries of polygons adjacent to each other. A result is a
be used for. Explain what the op- new layer with fewer polygons and the sum (or whatever
eration does and what happens you want the output to be) of the dissolved polygons is
with the attributes in the attribute displayed on the attribute table.
table.
6.
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Study online at https://quizlet.com/_cy0xoy
1. Provide three examples of auto- Equal interval (same amount of data in each class), Quan-
matic data classifications in GIS. tile (classifies data based on value, same amount of fea-
Briefly explain the differences be- tures), Equal-Area (each class has the same total approx-
tween these types of classifica- imate area). Natural Break (classes based on gap that
tions. occur in the distribution)
2. (True of False) The data to be True
displayed on a map must be
classified and represented using
graphic symbols that conform to
well-defined and accepted con-
ventions to be able to highlight
spatial patterns.
3. Explain the "modifiable areal unit" The MAUP is when you collect data on an area and aggre-
in the context of areal (polygon) gate that data together, it might not be representative of
classifications and its ecological individual data points. Its ecological implication is drawing
implication? false conclusions from misrepresented data.
4. In your own words, provide a defi- Vertical stacking of spatial information to get a compre-
nition for vector "overlay" in a GIS hensive idea of the area. The main conceptualizations
context. What are the two major are intersect (keeping the overlapping area and combine
conceptualizations of overlays in attribute table) and union (creates new polygons )
GIS?
5. Briefly explain what the dissolve The dissolve operation can be used to take away bound-
operation does and what can it aries of polygons adjacent to each other. A result is a
be used for. Explain what the op- new layer with fewer polygons and the sum (or whatever
eration does and what happens you want the output to be) of the dissolved polygons is
with the attributes in the attribute displayed on the attribute table.
table.
6.
1/4
