What does "contain Clementini" select in GIS?

The term "contain" in the context of the Clementini definition relates specifically to spatial relationships defined in GIS. The Clementini topological model focuses on the relationships between spatial features, particularly emphasizing how geometries interact in space.

Selecting features that "do not sit on the boundary" indicates that the features identified by this selection must be entirely within another feature without touching the boundary. This interpretation aligns with the definition of containment, which requires one feature to be entirely within another without any intersection along the edge.

In the context of the other potential answers, the notion of overlapping multiple geometries or fully encompassing a source layer involves different forms of spatial relationships. Additionally, the idea of features that only touch, as guided by Clementini's definitions, would not accurately represent the concept of containing, where no edge-touching is allowed in the strictest sense of the term. Thus, the focus on features that remain entirely within another feature is crucial to understanding the correct application of containment as described by the Clementini approach in GIS.