As part of LTSA’s broader initiative to reinvest in core systems, effective the week of August 19, ParcelMap BC will complete a transition to completely modernized technology underpinnings.
After nearly 10 years on it’s original platform, migrating to Esri’s ArcGIS Pro Parcel Fabric will solidify ParcelMap BC for the future while enabling LTSA to progress a new generation of property information capabilities for users.
Minimal customer impact is anticipated, limited to minor schema-related changes to ParcelMap BC data products, geometry source changes in search services, and a temporary hold on large scale spatial improvements. In addition, updates to Data Products will be on hold as of August 15, resuming the week of August 19. To varying degrees, customers may be required to review internal workflows to align with how data is now handled in ParcelMap BC. Detailed changes are described below.
Customers can email ParcelMapBC@ltsa.ca with questions.
Schema-related Changes to ParcelMap BC Data Products
Owner Type
- On the first Real World Change download, Municipal to Local Government will show as an “owner type” change.
- For Domain Codes, First Nations [plural] changed from First Nation [singular]. The Domain Description – First Nations [plural] – remains unchanged.
PlanID
- For Data Type Changes, the PlanID field is becoming a GUID (a globally unique identifier). This global ID is a string and functions the same as the Key field to link to plans. Previously, Plan ID was a long integer.
ParcelMap Search Services (PMSS)
Indian Reserves
- The Geometry Source for Indian Reserves will be derived directly from National Resource Canada (NRCAN), the authoritative source. Previously NRCAN source parcels were co-aligned to ParcelMap BC parcels. Limited overlap and discrepancies between varying source data is anticipated and will be addressed in future alignment initiatives.
- Active Parcels in the Crown Land Registry will continue to be mapped and co-aligned to ParcelMap BC parcels, some of which make up the external bounds of “Indian Reserves”.
Spatial Improvement, Least-Squares Adjustment (LSA) and Positional Error on Points
- Large scale spatial improvements (as communicated on the Spatial Improvement Wep App) will be on hold for several months as Least-Squares Adjustment (LSA) functionality is adapted to ArcGIS Pro. LTSA will advise customers when this service returns online.
- The upgrade to ArcGIS Pro has enabled a new LSA engine in ParcelMap BC. Transitioning from SNAP to DynAdjust ushers in the following:
- Adjustment of coordinates in three dimensions (x,y,z)
- Support of multiple measurement types such as horizontal angles and geodetic azimuths
- Constrained adjustments (adjustments using known, weighted control points)
- Minimally constrained or free network adjustments
- Estimation of precision of adjusted coordinates
- Statistical analyses of adjustment results
- Of note for land surveyors: the way Positional Error attributes are derived (as value distances in meters) will be changing to support with the new ArcGIS Pro Parcel Fabric. As a result:
- PMBC-COMPILATION: Positional Error is the average offset between Control points and associated fabric points in the neighbourhood
- PMBC-OPERATIONS: Positional Error is an estimate of the maximum distance a parcel is from its real-world position.
- LSA: Positional Error is a statistical measure of how likely a parcel is to be in its correct real-world position. It is calculated as circular error probable at 95%. The reported error is the worst CEP95 for the points on the parcel.