Question

Which of the following statement is INCORRECT?

• A. \( \text{Network analysis can be done with vector data} \)
• B. \( \text{Linear features are clearly identified as discrete features in vector database} \)
• C. \( \text{Satellite images are in vector format} \)
• D. \( \text{Digital elevation model is in raster format} \)

Hint:

Remember that images, including satellite images and DEMs, are usually grids of values (raster), while distinct features like roads are lines (vector).

Answer 1

The Correct Option is C

Satellite images are inherently in raster format, composed of a grid of pixels, each with a specific digital number representing the intensity of electromagnetic radiation. Vector data, on the other hand, represents geographic features as points, lines, and polygons. Network analysis is typically performed on vector data representing interconnected features, and linear features are naturally represented as discrete line features in vector databases. Digital Elevation Models (DEMs) are also raster datasets, where each cell contains elevation information.