Welcome to Geocoding using ArcGIS Presented by: The Nevada Division of Public and Behavioral Health,...
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Welcome to Geocoding using ArcGIS Presented by: The Nevada Division of Public and Behavioral Health, Office of Public Health Informatics and Epidemiology
Welcome to Geocoding using ArcGIS Presented by: The Nevada
Division of Public and Behavioral Health, Office of Public Health
Informatics and Epidemiology in Partnership with the Nevada Primary
Care Association the Third of a Monthly Series on Geographic
Information Systems (GIS)
Slide 2
Course Goals/Objectives: Basics of Geocoding Preparing your
data for Geocoding How to Geocode
Slide 3
The Basics of Geocoding X, Y Coordinates
Slide 4
X, Y Coordinates -1194311.984 W 391154.548 N
Slide 5
Using Street Addresses
Slide 6
Why not use Google or a Similar Service? Not secure Doesnt
transfer to a map Cant do analysis Batch geocoding an issue
Slide 7
Basics of Geocoding Geocoding works by using Locators Address
points Address Interpolation using Street centerline data Zip code
centroids Cascading Locators
Slide 8
Address Points
Slide 9
Address Points (continued)
Slide 10
Address Interpolation 4126
Slide 11
Zip Code Centroids Zip Codes Zip Codes are defined at the
convenience of the U.S. Postal Service and can change for many
reasons Average number of changes per year 7,407.6 As of January
2014, there are roughly 453 Zip Codes in Nevada Average population
per Zip Code 7,423
Slide 12
Zip Code Centroids (continued) ZCTA Zip Code Tabulation Areas
Census Blocks are assigned the most frequently used Zip Code Blocks
aggregated to make up the ZCTAs U.S. Census population data is
available
Slide 13
Preparing Your Data for Geocoding
Slide 14
Geocoding Demo
Slide 15
Geocoding Process Add the excel file to be geocoded Right-click
the excel file in the Table of Contents Select the Geocode
Addresses Choose the correct Address Locator Click OK Choose a
location and name the Results file Click OK
Slide 16
Geocoding Process (continued) Select Rematch to review the
results Determine if there are common characteristics that can
easily be changed Make note of the necessary changes to the
addresses, and Either correct the original file and rerun the
geocoding process, or Make the corrections in the Rematch dialog
box Make recommendations to standardize future data entry