Parcel Editing in ArcGIS: Migrating...
Transcript of Parcel Editing in ArcGIS: Migrating...
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Parcel Editing in ArcGIS: Migrating DataChristine Leslie, Amir Bar-Maor
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What is a parcel fabric?
• Dataset of related feature classes and tables
- Polygons, lines, points, plans, etc.
- Predefined system attributes
• Connected parcel groups
- Forms a parcel boundary network
• Explicit topology
- Defined by common parcel corner points
• Parcel Editor toolbar
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Parcel fabric data model
Plans
Control Line Points
Points Lines
Parcels
1-M
0-M
2-1
1
1-M
0-1
1
1
0-1
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Parcel fabric data model
• Plans
- Represent the legal document
- Plans table stores record information
• Parcels
- Polygon defined by a sequence of lines (traverse)
• Lines
- Store recorded dimensions
- Have a To and a From point
• Points
- Have X Y Z coordinates
- Can have a control point
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Line points
• Ensure topology between parcels
• Preserve recorded dimensions
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Amir Bar-Maor
Demo
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Local Government Information Model (LGIM)
• Data model can be extended for your organization
• In the USA, the Local Government Information
Model is used (LGIM)
• Parcel fabric can be enabled with the LGIM
• LGIM provides a configured parcel fabric layer
• LGIM provides automated parcel editing workflows
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Migrating data to the parcel fabric
• Setup the data model
- Extend your parcel fabric model
- Or use the Local Government Information Model
• Setup a staging environment
• Format and prepare data
• Use the Load a Topology to a Parcel Fabric
geoprocessing tool
• Import control points
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Data migration steps
1. Create a parcel
fabric
2. Setup staging &
create attributes
3. Prepare
geometries
4. Load data
5. Configure the
map
6. Import control
points
• Recommendation: Test the workflow against a small pilot area of parcels
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Step1: Create a parcel fabric
• Create a parcel fabric in a feature dataset
• Extend the data model
- Add your own attributes, tables
- Or enable the Local Government Information Model (USA)
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Amir Bar-Maor
Demo: Step 1
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Step 2: Setup staging and create attributes
• Review source data
- Inventory/count of polygons
• Create an empty polygon feature class for each parcel type
- In a separate feature dataset
• Add attribute fields
- Fields must match fields in parcel fabric tables (both system and
additional)
• Calculate/format attributes in source polygons
- Prepare source attributes for loading into staging feature classes
- For example, Types, Historic parcels
• Check alignments between overlapping polygon types
- Use the Integrate geoprocessing tool
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Step 2 continued - Staging
• Load source polygons into staging feature classes
- Use the Simple Data Loader
• If using the LGIM
- Staging feature classes are setup for you
- Download and unpack the staging layer package
- Use the Simple Data Loader
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Amir Bar-Maor
Demo: Step 2
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Step 3: Prepare geometries
• For each parcel type:
- Check and repair polygon geometries (GP Tool)
- Convert polygons to lines (GP Tool)
- Clean curves (GP Tool in ArcGIS Pro)
- Rebuild polygons from lines (GP Tool)
- Check polygon inventories/counts
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Amir Bar-Maor
Demo: Step 3
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Data migration steps - recap
1. Create a parcel
fabric
2. Setup staging &
create attributes
3. Prepare
geometries
4. Load data
5. Configure the
map
6. Import control
points
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Step 4: Load data
• Use the Load a Topology To A Parcel Fabric geoprocessing tool
• Individual topologies for each parcel type
• Topology validated against a required set of rules
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Amir Bar-Maor
Demo: Step 4
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Steps 1 to 4: Summary of staging
• Polygon feature class
for each type
• Separate feature
datasets
• Add/map fields that
match fabric fields• Load source polygons into staging using Simple
Data Loader
• Create lines
• Format lines
• Rebuild polygons from
lines
• Create/validate
topologies
• Load topologies
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Step 5: Configure your map
• If using the LGIM:
- Add LGIM-enabled parcel fabric to the map
• If using your own model:
- Query parcels and save layer files
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Amir Bar-Maor
Demo: Step 5
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Step 6: Import control points
• Why have control?
- Accuracy for new parcels
- Deed references control points
- Least-Squares adjustment
• Use Import Control Points wizard
• Use XYZ coordinates
• Can be loaded multiple times for new updates to coordinates
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Amir Bar-Maor
Demo: Step 6
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Additional considerations
• Iterate tool for large datasets
- Divide into fishnet zones
• Overlapping parcels of the same type
- Planarize your lines
- Merge courses after loading
• Starting with lines instead of polygons
- Format lines, type lines, build polygons
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Resources
• Documentation
- http://desktop.arcgis.com/en/arcmap/latest/manage-data/editing-parcels/dm-setupdatamodel.htm
• LGIM
- Download the Maintain Tax Parcel Inventory app to get staging layer package
http://solutions.arcgis.com/local-government/land-records/manage-property/
- Enable parcel fabric with the LGIM in Catalog
• Land Records Meetup
• http://www.meetup.com/Esri-Land-Records-Meet-Up/
• Esri supported parcel fabric Add ins
- http://www.arcgis.com/home/item.html?id=7f35ed8034a942b98bf3290f7adcbf13
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Please Take Our Survey on the App
Download the Esri Events
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Select the session
you attended
Scroll down to find the
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Complete answers
and select “Submit”
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See Us Here – Wednesday 11th July
• Parcel Editing in ArcGIS:
Migrating Data
• Land Records and the Parcel
Fabric (Paper Presentations)
• Parcel Editing in ArcGIS:
Advanced Topics
WORKSHOP LOCATION
• SDCC Room 04
• SDCC – Room 24 B
• SDCC Room 03
TIME FRAME
• Wednesday 8:30am – 9:30am
• Wednesday 8:30am – 9:30am
• Wednesday 2:00pm – 3:30pm
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See Us Here – Thursday 12th July, AM
• Parcel Editing in ArcGIS:
Advanced Topics
• Parcel Editing in ArcGIS:
Migrating Data
• ArcGIS For Land Records: A
System of Engagement for the
Assessor’s Office
• UC Land Records Meetup
WORKSHOP LOCATION
• SDCC Room 32 A/B
• SDCC Room 33 A/B
• Esri Showcase – Envisioning
Center 2 - Hall B1
• SDCC - Room 24 B
TIME FRAME
• Thursday 10:00am – 11:00am
• Thursday 10:00am – 11:00am
• Thursday 10:00 am – 10:45 am
• Thursday 11:30 am – 12:30 am
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See Us Here – Thursday 12th July, PM
• Assessment and Tax Maps and
Apps for Local Government
• Editing and Maintaining Parcels:
An Introduction
WORKSHOP LOCATION
• SDCC – Room 30 B
• SDCC Room 33 A/B
TIME FRAME
• Thursday 1:00pm – 2:00 pm
• Thursday 4:00pm – 5:00 pm
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