Transformations
7 important questions on Transformations
What types of transformations are there?
- Geometric
What are the advantages of vector?
- Explicit description of topology
- Coordinate transformation
- Accurate graphic presentation
What are the disadvantages of vector?
- Combining data sets
- Spatial analysis is expensive
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What are the advantages of raster?
- Modeling and analysis are easier
- Less expensive to render
What are the disadvantages of raster?
- Coordinate transforation
- Harder to update
Give a summary of vector to raster?
- Priority rules (weights) in case: many feature types, many attribute values
- Allocation rules : feature percentage of cell size
What is the summary raster to vector?
1 - Into what object/feature type (point, polyline or polygon)
2 - Object/feature construction rules: -thematic classes - topology
3 - Transformation into data structure
4 - Geometric cosmetics
The question on the page originate from the summary of the following study material:
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