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Mastering ArcGIS Chapter 3 exercises

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Chapter 3
Exercises
1. Examine the coordinate system for the streets feature class in the Austin geodatabase. What
is the name of the coordinate system? Is it projected or unprojected? What are the map units?
2. What is the name of the projection (not the coordinate system) used by the feature classes in
the Oregon geodatabase? What are the central meridian and the standard parallel(s)? Does it
use the equator for the latitude of origin?
3.
Open the map document ex_3.mxd in the mgisdata\MapDocuments folder. What is the
coordinate system of the data frame in this map?
What are the map units of the
frame?
What are the display units of the frame?
What are the feature class
coordinate systems?
Choose a good projection/coordinate system from the predefined coordinate systems in
ArcGIS for maps of the following areas. Explain your choice for each. (Hint: Use the UTM
zone and State Plane zone feature classes to help locate the area relative to a zone, if needed.)
Humboldt County, California
Grafton County, New Hampshire
State of Nevada
ssie liso wen of ble will mont holesves paxs
State of New Jersey
andmun novs ne of Hlebnoon way of noflu fund
England
itprofe when note pol
Antarctica, true distances required
5.
You are working on a statewide Illinois project and decide to define a custom coordinate
system. Start with one of the State Plane zones and modify it slightly to make it better for the
whole state. Explain your approach and capture the window showing the custom coordinate
system description you created.
6.
You are working on a statewide Colorado project and decide to define a custom coordinate
system. Start with one of the State Plane zones and modify it slightly to make it better for the
whole state. Explain your approach and capture the window showing the custom coordinate
system description you created.
7. The Austin folder contains two shapefiles showing dog off-leash areas as points and polygons.
Both have coordinate problems. Describe the problem for each; then fix them and create a
map showing both the points and the polygons with a backdrop of the major transportation
arteries in Austin. (Hint: Open ArcMap and load arteries first, in order to be able to compare
the other data sets against it.) capture the map.
8. Find a map image on the Internet, save it as a GIF or JPEG, and georeference it. Display it
with at least one other data set from the mgisdata folder and capture the map.
Challenge Problem: My Country 'Tis of Thee
Create a new project folder called USProject in your gisclass folder, and create a file geodatabase
in it called USContig. Find and import at least four feature classes on a common theme from the
Internet to this geodatabase, including only the lower 48 states and placing them all in the USA
Contiguous Albers Equal Area Conic coordinate system. Remember to create citations in the Item
Description for each one. Turn in a map screenshot, a screenshot of the expanded geodatabase in
the Catalog, a list of the four original coordinate systems of the data, and your four citations.

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