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Discuss the disadvantages of the following data types as used in GIS as forms of spatial data types. a)Raster data type. b)Vector data type.

      

Discuss the disadvantages of the following data types as used in GIS as forms of spatial data types.
a)Raster data type.
b)Vector data type.

  

Answers


Jim
a)Raster data type
The cell size determines the resolution at which the data is represented.
-Cell boundaries independent of feature boundaries.
-Processing of associated attribute data may be cumbersome if large amounts of data exists.
-Less compact data structure.
-Difficulties in representing topology
b)Vector data type.
-Inefficient for continuous data and image processing.
-Spatial analysis and filtering within polygons is impossible.
-More update intensive.
-Complex data structure, the location of each vertex needs to be stored explicitly.
-Overlays are more difficult to implement.
jim items answered the question on November 14, 2018 at 11:19


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