Question

Which of the following statement is INCORRECT in the context of GIS?

• A. \( \text{CLIP erases a part of one of the input layers} \)
• B. \( \text{SPLIT overlays polygons and keeps all areas in both layers} \)
• C. \( \text{INTERSECT overlays polygons and keeps only the common portions of both layers} \)
• D. \( \text{UNION overlays polygons and keeps all areas in both layers} \)

Hint:

Think of CLIP as using one cookie cutter (clip layer) to cut out a portion of another layer (input layer).

Answer 1

The Correct Option is A

In GIS, the CLIP operation extracts features from one layer that reside entirely within the spatial extent of another layer (the clip layer). It does not erase parts of the input layer outside the clip layer's boundaries; those parts are simply not included in the output. \begin{itemize} \item SPLIT divides features based on the boundaries of another layer. \item INTERSECT creates new features representing the geometric intersection of the input layers, retaining attributes from both. \item UNION combines the spatial extent and attributes of all input layers. \end{itemize}