Cadastral Data Exchange Standard

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Cadastral Data Exchange Standard version 2.0
11th Annual GIS Standards Forum March 10, 2009
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Proposal by the Tax Lots Workgroup Add Map Index
Boundary as an optional item to the exchange
standard
Map Index Polygon boundaries that represent the
map area that is the boundary of a group of tax
lots.
The deliverable is an optional shapefile provided
as part of the Cadastral Exchange Standard.
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Major Amendment to the Standard

• Determined that this addition to the CDE Standard
  represented a Major amendment to the standard.
• Examples cited in the Procedures for Amending
  Standards include
• Making significant changes to the data model
• Adding to the list of minimum attributes
• Or changing optional items to required items

Adding Map Index Polygons was determined to be a
significant change to the data model.
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Why include Map Index as part of the Standard?
Many Counties already have this as a layer in
their GIS or can generate them by merging tax
lots Map Index polygons aid DOR in the assembly
of ORMAP Goal 2 data Map Index polygons can be
merged to create an outer County Boundary
facilitate future county edgematching efforts
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Amendment Process

• Discuss changes with Tax Lot workgroup
• Incorporate changes into the existing standard
  (v 1.4)
• Publish to GEOs web page 45 day review
• Comments/Suggestions brought to FIT group for
  review
• Updated standard presented to GIS community for
  approval

Revised Standard posted to GEOs web page on
December 3, 2008 Received comments from 6 parties.
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Revision Posted to Web Site
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Revision Posted to Web Site

• Feedback
• CVD ambiguous
• Please list valid attributes
• Auto fields not part of current standard, can
  we remove them?
• - Use a standard naming convention for the
  mapindex shapefile
• Comment on format for taxlot field in tax lot
  polygon attributes

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Revisions to the first Amendment
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Amendments to the first Revision

• defined domain values
• defined valid attribute values
• included shapefile naming standard
• removed auto fields from standard
• - Reviewed tax lot polygon Taxlot field seems
  to be OK

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Next Steps

• Repost to GEOs GIS Data Standards web site for
  second 45-day review and comment process
• Tech Group Review possibly at the second ORMAP
  Grant review meeting on April 16, 2009
• Notification of intent to adopt the standard
  presented to GIS Community email notification
• Adoption by OGIC at appropriate quarterly meeting

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