Question

Triangulated Irregular Network (TIN) is described as:

• A. Raster data
• B. Vector data of rainfall
• C. Grid data of elevation
• D. Vector based representation of physical land surface

Hint:

Surface models in GIS: \[ \boxed{ \begin{aligned} \text{DEM} &\rightarrow \text{Raster surface model} \text{TIN} &\rightarrow \text{Vector surface model} \end{aligned} } \]

Answer 1

The Correct Option is D

Concept: A Triangulated Irregular Network (TIN) is a vector-based model used to represent continuous surfaces such as terrain. It consists of non-overlapping triangles formed from irregularly spaced elevation points.

Step 1: Understand the TIN model. TIN represents terrain using
• Nodes with elevation values.
• Triangular facets.
• Breaklines and surface features.

Step 2: Identify the correct description. Hence, \[ \boxed{\text{TIN is a vector-based representation of the physical land surface}.} \] Therefore, the correct option is \[ \boxed{(D).} \]