18-Geom-A7 Geospatial Information Systems
Worked solutions to 4 past sittings (2014–2018), 65 questions. Pick a sitting, or start from a topic below.
Topics across the sittings
Topics that come up in more than one sitting, taken from the headings of our worked solutions. A topic counts once per sitting.
- Attribute Uncertainty (3 sittings): December 2018 Q1 · December 2015 Q10 · May 2014 Q9
- Spatial (3 sittings): December 2018 Q1 · December 2015 Q10 · May 2014 Q9
- Address matching (2 sittings): December 2018 Q11 · May 2017 Q3
- Buffers in proximity analysis (2 sittings): May 2017 Q11 · May 2014 Q12
- Conceptual (2 sittings): December 2018 Q2 · May 2017 Q10
- Continuous fields (2 sittings): December 2018 Q4 · May 2017 Q12
- Data-model (2 sittings): December 2018 Q6 · May 2017 Q14
- Discrete objects (2 sittings): December 2018 Q4 · May 2017 Q12
- Entity-Relationship Models (2 sittings): December 2015 Q9 · May 2014 Q20
- Logical (2 sittings): December 2018 Q2 · May 2017 Q10
- Map projection (2 sittings): December 2018 Q14 · May 2017 Q6
- Metadata (2 sittings): December 2018 Q1 · May 2017 Q9
- Physical models (2 sittings): December 2018 Q2 · May 2017 Q10
- Purpose of georeferencing (2 sittings): May 2017 Q8 · December 2015 Q2
- Thick-client web mapping (2 sittings): December 2018 Q13 · May 2017 Q5
Questions by sitting
December 2018
- Question 1: Spatial vs attribute uncertainty; metadata
- Question 2: Conceptual, logical and physical models
- Question 3: The buffer function and proximity analysis
- Question 4: Discrete objects versus continuous fields
- Question 5: SQL in geospatial data management
- Question 6: Data-model and spatial-rule comparisons
- Question 7: Quadtree indexing of a land-use raster
- Question 8: The four overlay operators
- Question 9: Data–information–knowledge and decision-maker preference
- Question 10: Criteria of geospatial data quality
- Question 11: Address matching
- Question 12: Site-suitability model for a ski resort (flowchart)
- Question 13: Thin-client versus thick-client web mapping
- Question 14: Map projection
- Question 15: UML relationships in the OGC Geometry schema
May 2017
- Question 1: Criteria describing geospatial data quality
- Question 2: Raster versus vector data — advantages and limitations
- Question 3: Address matching
- Question 4: Site-selection flowchart (school siting)
- Question 5: Thin-client versus thick-client web mapping
- Question 6: Map projection
- Question 7: From spatial data to decision-making
- Question 8: Purpose of georeferencing
- Question 9: Metadata and its standards
- Question 10: Conceptual, logical and physical models
- Question 11: Buffers in proximity analysis
- Question 12: Discrete objects versus continuous fields
- Question 13: DBMS in GIS
- Question 14: Data-model and spatial-operation pairs
- Question 15: Quad-tree of the land-use map
December 2015
- Question 1: GIS Definitions
- Question 2: Purpose of Georeferencing
- Question 3: Applications of GIS
- Question 4: Vector versus Raster Data Structures
- Question 5: 2-D Transformation for Digitized Map Corners
- Question 6: Removing Residual Geometric Distortions on Merge
- Question 7: Cartesian versus Geodetic Coordinates
- Question 8: Choosing a Map Projection
- Question 9: TIN and Entity-Relationship Model
- Question 10: Spatial versus Attribute Uncertainty
- Question 11: Data Uncertainty and Lineage in Quality Control
- Question 12: Applying GIS Analysis
May 2014
- Question 1: Metadata in a GIS
- Question 2: Attribute Data and Spatial Data
- Question 3: Automated Cartography, CAD and GIS
- Question 4: Basic Functions of a GIS
- Question 5: Datums in a GIS
- Question 6: Rubber Sheeting and Conflation
- Question 7: Vector and Raster Data Models
- Question 8: Conformal Map Projection
- Question 9: Spatial and Attribute Uncertainty
- Question 10: Spatial Statistics and Spatial Analysis
- Question 11: Spatial Autocorrelation vs Spatial Correlation
- Question 12: Buffers in Proximity Analysis
- Question 13: DSM vs DEM, and DEM Sampling Schemes
- Question 14: The TIN and How It Is Produced
- Question 15: Delaunay Tessellation and Voronoi Diagram
- Question 16: The Point-in-Polygon Problem
- Question 17: Quad-tree and Run-length Encoding
- Question 18: DBMS in a GIS
- Question 19: Organizing Map Data into Layers
- Question 20: Entity-Relationship (ER) Models
- Question 21: Map Generalization vs Spatial Interpolation
- Question 22: Spatial Interpolation vs Spatial Extrapolation
- Question 23: SQL in a GIS