The GATE Grind

GATE 2021 AR – Question 14

Data Analysis, Remote Sensing and Geo-informatics · Storage of spatial data · 1 mark · Multiple choice

What is the smallest entity of raster data in GIS?

  1. Line
  2. Pixel
  3. Point
  4. Polygon

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Show answer and explanation

Correct answer: (B) Pixel

Explanation

A raster is a grid of cells, with each pixel storing a value for its represented location/area. Thus B. Points, lines and polygons are the main geometric primitives of vector data, rather than the elementary raster cell.

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