indiana gis conference 2007 tracking parcel genealogy – a parcel’s family tree brent mainzinger...
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Indi
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Tracking Parcel Genealogy –
A Parcel’s Family Tree
Brent MainzingerThe Sidwell Company
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The Life of a Parcel
• A parcel is born• A parcel has parents• A parcel has children• Parents can sometimes survive• Surviving parents can have more children• Parents can sometimes retire• Parents can die
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Parcel Actions
• Split/Divide• Combine/Merge• Retire• Unretire• Create New• Delete
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Documents Drive Transactions,
which Control Parcels
DeedsPlats
Split/DivideCombine/Merge
01-02-201-00401-04-201-005
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Your Parcel Number Matters
• Is it permanently associated with the legal description of a property?
• Is your parcel number geographically based?• Do you re-use parcel numbers?• Do you use survivable parents?• Do you retire or delete parcels?• Are non-real estate items assigned parcel
numbers
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What Parcel Genealogy Needs to Do…
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The transaction ties the parcels
together
Track Parent-Child Relationships
The transaction ties the parcels together
Tie documents to the transaction
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Searchable
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Associate Documents
Associate with Parcels• Surveys• Letters• Spreadsheets• Walk-throughs• etc
Associate with Transactions• Plats• Deeds• etc.
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Create Reports
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Store Data in ODBC Compliant
Data Sources
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ODBC Compliance is Important
Don’t put data into anything that you can’t get it out of !
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The People Side
• Requires the discipline to not take short cuts
• Documents must be worked in the order that they are recorded
• Requires cooperation between departments
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Parcel feature archiving in ArcMap
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Geodatabase Feature Archiving
• Store born and retirement dates for parcel polygons
• Automatically store geography of retired parcels
• Spatially query parcels sharing geography over time
• Display map through time
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Requires a Versioned Geodatabase
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Feature class must be have
archiving enabled
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Parcel Archive Table
Born Date Retire Date
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Track Parcel Geometry
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Parcel Genealogy with document association
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