Question

What is the smallest entity of raster data used in GIS?

• A. Line
• B. Pixel
• C. Point
• D. Polygon

Hint:

In GIS, raster data is made up of pixels, while vector data is made up of points, lines, and polygons.

Answer 1

The Correct Option is B

In GIS, raster data represents spatial information in a grid format, where each grid cell or unit is called a pixel. The pixel is the smallest entity in raster data and holds values such as elevation, temperature, or land use. Each pixel represents a specific geographic area on the Earth's surface, and its size depends on the resolution of the raster image. A higher resolution means smaller pixels, offering finer detail. Thus, the smallest entity of raster data is a Pixel.