mapping data with uncertainty: introduction to the arcgis extension lisa neidert & sherry briske...
TRANSCRIPT
Mapping Data with Uncertainty:Introduction to the ArcGIS Extension
Lisa Neidert & Sherry Briske
February 1, 2012PSC Data WorkshopAnn Arbor, MI
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
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
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
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.
ArcMap: Open empty table
Tools/Extensions
Extensions/ACS Mapping Extension
View/ACSMapping
ACS Mapping is now accessible
ACS Mapping: Choices
Merging Input Files
Goes to Default Directory
Go to your working directory
Highlight join files
Identify keys & Add layer
Overlay Item with CV
Mapping Data Reliability
Define Variables and MoE
Accept/Modify Symbology
Create Layer Package