Discussion
Georeferencing involves ................ .
Answer: B
Georeferencing involves assigning geographical co-ordinates to the mapped units.
A scanned map or a satellite image starts with only image co-ordinates (rows and columns). Georeferencing ties it to the real world by identifying ground control points whose latitude and longitude, or projected co-ordinates, are known, and transforming the image so that every location carries real geographical co-ordinates in a defined projection.
Attaching attribute data is attribute entry, linking non-spatial information to features. 'Spatial data' is too vague, since the data are already spatial, and real-time data feeds are a different matter entirely.
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