Lab Manual/Exercise Worksheets prepared by Christopher J. Sutton, Western Illinois University
Dot Density Mapping. In this exercise, students use data from the 2002 Census of Agriculture using the dot density thematic technique. Skills covered in the exercise include: selecting fields to display, adjusting dot size and dot value, changing the background properties of the dot map layer.
Acknowledgments
The author wishes to thank ESRI, Inc. for their prompt and generous permission to use screenshots of the GUI and data used in these exercises. ArcMap is the intellectual property of ESRI and is used herein by permission. Copyright © 2008 ESRI. All rights reserved. http://www.esri.com
In addition to the data provided by ESRI, data used in the exercises are from the following sources: The National Atlas
2002 Agricultural Census
CIA World Factbook
U.S. Bureau of the Census
Federal Aviation Administration
NOAA Coastal Services Center
Dot Density Mapping is a PDF (Portable Document Format) document that must be downloaded to your hard drive. You will need the Adobe Acrobat Reader to view it. If you do not have the Adobe Acrobat Reader, you can download it from the Adobe web site for free.  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072943823/41597/getacro.gif','popWin', 'width=138,height=101,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> Dot Density Mapping PDF
(971.0K)
 Dot Density Mapping Zip
(5104.0K)
The mapping project file ([exercise name].mxd) and data files (contained in a separate folder) are compressed as a ZIP file and must be unzipped in order to work. Save the file to a location on your computer or external drive and unzip it.
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2009 McGraw-Hill Higher Education