Cognised existence: A geodetic control point is a monumented position whose coordinates are determined to high accuracy so that all subsequent surveys and mapping can be tied to a common spatial reference. Without control points, independent datasets cannot be spatially registered to one another.
Question: Where are the geodetic control points, and what coordinates and accuracy do they define?
Realisations
Instead of hardcoding implementation schemas here, SPHERE separates semantic meaning from dataset implementation. See the following realisations for how to access this data:
When to Use This Leaf
- Datum alignment: verifying or transforming coordinates between ETRS89, System 34, DVR90, and DNN.
- Survey control: anchoring new field measurements to the national reference network.
- Quality assessment: checking whether a dataset’s spatial accuracy is consistent with the control network it was tied to.
For ordinary address, parcel, or topographic work, control points are usually background infrastructure. Start from Addresses, Cadastral Parcels, or Transport Networks instead.