Discussion
A good example of raster data is ....................
Answer: A
A good example of raster data is satellite imagery.
Raster data store the world as a grid of cells (pixels), each holding a value such as reflectance, elevation or land cover. A satellite image is exactly that: rows and columns of pixels recorded by a sensor.
A railway line is a line feature, and dug wells and airports are point (or small polygon) features. In a GIS such discrete objects are normally stored as vector data, with coordinates for points, lines and polygons.
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