1. Mapping Data with Uncertainty: Introduction to the ArcGIS Extension Lisa Neidert & Sherry Briske February 1, 2012 PSC Data Workshop Ann Arbor, MI

2. Synopsis of Mini-workshop  ACS data are noisy  http://www.psc.isr.umich.edu/dis/acs/aggregator/  ArcGIS extension  http://gesg.gmu.edu/census/index.htm  Tool that allows one to map geographic variation in a characteristic & show data quality or test for differences  ArcGIS  Or do by hand via layers

3. Purpose of ArcGIS Extension  Mapping ACS Estimates with CV  Identifying Areas with Significant Differences  Selected unit vs all other  Several units vs all other  Fixed value with all

4. Details for Workshop  Loaded on PSC Library Computers  Available once ArcGIS is invoked  Data & Shapefile requirements  http://www.psc.isr.umich.edu/dis/workshop/Download_ACS_Instruction_inTable.pdf  Guide to ArcGIS Extension  http://www.psc.isr.umich.edu/Documentation.pdf  Instructional Area [Copy directory contents]  T:\sb\workshop  For Later  [Installation instructions for your PC/laptop] http://gesg.gmu.edu/census/readme.pdf

5. ArcGIS Extension  Invoke ArcGIS  Everything happens within ACS Mapping Tool  Join shapefile & data table  Choose procedure  Need to save as layer package  To modify symbology, etc.

6. ArcMap: Open empty table

7. Tools/Extensions

8. Extensions/ACS Mapping Extension

9. View/ACSMapping

10. ACS Mapping is now accessible

11. ACS Mapping: Choices

12. Merging Input Files

13. Goes to Default Directory

14. Go to your working directory

15. Highlight join files

16. Identify keys & Add layer

17. Overlay Item with CV

18. Mapping Data Reliability

19. Define Variables and MoE

20. Accept/Modify Symbology

21. Create Layer Package

22. Questions/Comments  E-mail lisan@umich.edulisan@umich.edu