the loading and maintenance of cadastral data in the spatial data infrastructure (sdi)

The Loading and Maintenance of Cadastral Data in Manitoba’s Spatial Data Infrastructure (SDI)

Bob Bruce & Tony ViveirosFME World Tour 2014

April 11

Presentation Outline• Background to the SDI Project

• Description of the Cadastral Datasets

• Implementation of Table and Feature Class to house the data

• Detailed description of Workbench files and their operation

• Next steps2

What is a SDI?The technologies, policies and people necessary to enable the use of spatially referenced data through all levels of government, stakeholders and the public.

SDI Vision: Manitoba’s source for authoritative geospatial data.

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Manitoba SDI Objectives1.To build (design and implement) a SDI for the

Province of Manitoba that:

– stores, manages and disseminates Manitoba’s geospatial data across government and to the public

– is scalable to meet anticipated future needs 

2.To provide a SDI Governance model that clarifies the tasks and policies required for SDI success.

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SDI Solution: 3 Environments

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SDI Solution: Data Flows

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The Cadastral Datasets

• Accurately computed cadastral datasets in Winnipeg

• Accurately computed cadastral datasets in Manitoba

• Manitoba Reference Grid

• Northern Quarter Sections

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Cadastral Datasets in Winnipeg• Maps of areas of Winnipeg on the MLI• Area 6 of the Winnipeg Cadastral

Mapping

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Cadastral Datasets in Manitoba

• In the MLI we currently start by accessing data from a map of the province to go to subareas

• By clicking on a subarea we go to a map that allows us to select and download data from a dataset

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Manitoba Reference Grid• Parcel Fabric of Quarter Sections in the

surveyed area of Manitoba

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Northern Quarter Section GridA computed

theoretical quarter section grid of the unsurveyed north

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Maintaining a Seamless Cadastral Polygon Layer

• Each of the cadastral polygon fabrics have been fitted together and are ready to be combined into one polygon fabric

• These fabrics are combined into a single GeoDatabase polygon feature class

• The individual datasets are tracked with a database table 14

Cadastral Jobs Table

A record of which cadastral datasets are currently in the cadastral polygon feature class

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Workbench Files• One workbench file to ‘decide’ whether

an input dataset is a new one or a replacement one and run the processes to populate the feature class and job table

• Once workbench file (called by the first one) to actually insert a dataset into the polygon feature class

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First Workbench File

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First Workbench File – Part 1

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First Workbench File – Part 2

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First Workbench File – Part 3

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Second Workbench File

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Current Status

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• Develop processes to import the Northern ‘theoretical’ quarter section grids

• Develop a workbench file that uses the Directory and File Pathnames reader to scan folders for datasets and call the workbench files

Further Improvements

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Questions ?

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