Geocoding address data

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Geocoding address data

• J426 Class 14
• February 26, 2009

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Overview

• Geocoding addresses
• Geocoding issues
• Geocoding process

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Geocoding

• Have data with geographic identifiers such as
  addresses or zip codes
• Requires base map with geographic positions
  associated with identifiers
• Address ranges for street segments
• Coordinates of ZIP code centroids (including
  ZIP4)

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Geocoding addressesaddress base map data required
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Geocoding addresseslocating an address
2098
2099
2000
2001
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Geocoding issues

• Problems with address data
• Misspellings
• Inaccuracies in addresses
• Nonstandard addresses
• Multiple names for streets
• Problems with address base map data
• Missing street segments
• Missing address ranges
• Missing new streets

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Geocoding process

• Create address locator
• Match addresses automatically
• Match addresses interactively to attempt to match
  unmatched addresses