Problems

Real geospatial problems, graded automatically. Choose a track, a level and what you want to hand in.

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Data Management Decision support Clear all

Not started, Build the global seismic reconnaissance watchlistDecision supportPython
Turn a fixed USGS event feed into a mapped, reproducible shallow strong-event watchlist for requesting impact products.
Spatial AnalysisintermediateDifficulty: intermediate240 XP~40 min5 checksSpatial AnalysisintermediateDifficulty: intermediate24040m5
You hand in a Python script.
Dataset
Global M5.5+ earthquakes, Jan–Mar 2025 · Point · 86 features · EPSG:4326
What you’ll do
Apply two inclusive, unit-aware filters to the frozen event snapshot
Carry stable event identifiers and response metadata into a point GeoDataFrame
Map event magnitude as a proportional point result without claiming it is impact
USGSearthquakesGeoPandasemergency screeningglobalAlso trains Python, Data Management, Cartography
Open problem
Not started, Where should a waterway survey start?Decision supportSQL
Screen large global urban footprints for mapped river contact while keeping scale limitations explicit.
Spatial AnalysisintermediateDifficulty: intermediate320 XP~50 min9 checksSpatial AnalysisintermediateDifficulty: intermediate32050m9
You hand in a spatial SQL query.
Datasets
Urban areas · Polygon · 2,143 features · EPSG:4326
Rivers and lake centrelines · LineString · 461 features · EPSG:4326
What you’ll do
Apply a spatial join to real river and urban geometry
Keep zero-contact footprints in the inventory
Distinguish map-scale contact classes for survey planning
Natural Earthurban waterPostGISspatial screeningcategorical mapglobalAlso trains PostGIS / SQL, Cartography, Data Management
Open problem
Not started, Where should the sewer service desk review closure lag?Decision supportPython
Turn a fixed 311 complaint cohort into a map of requests open longer than an analyst-defined day.
Spatial AnalysisintermediateDifficulty: intermediate320 XP~50 min5 checksSpatial AnalysisintermediateDifficulty: intermediate32050m5
You hand in a Python script.
Dataset
NYC 311 sewer requests, 1–7 June 2025 · Point · 408 features · EPSG:4326
What you’ll do
Calculate closure lag from timestamp fields without inventing values for open requests
Select the service manager's review queue
Map the concentration of selected requests while retaining per-request details
NYC 311urban servicestemporal GISheat mapGeoPandasAlso trains Python, Cartography, Data Management
Open problem
Not started, Which capitals are more than an hour from a scheduled airport?Decision supportGeoJSON
Nearest-neighbour from 200 national capitals to 872 civil airports, geodesically, with a threshold that has to be applied honestly.
Spatial AnalysisintermediateDifficulty: intermediate230 XP~40 min5 checksSpatial AnalysisintermediateDifficulty: intermediate23040m5
You hand in a GeoJSON result.
Datasets
Populated places · Point · 1,251 features · EPSG:4326
World airports · Point · 893 features · EPSG:4326
What you’ll do
Filter the places to national capitals and the airports to civil scheduled-traffic fields
Find each capital's nearest qualifying airport with a geodesic distance
Keep the capitals beyond 75 km and report the airport and the distance
nearest neighbourgeodesichaversinelogisticsglobalAlso trains Data Management
Open problem
Not started, Build an earthquake contact reconnaissance queueProjectDecision support3 steps
Screen strong shallow events, quantify airfield and settlement proximity, and hand over a traceable contact map.
Spatial AnalysisadvancedDifficulty: advanced550 XP~95 min12 checksSpatial AnalysisadvancedDifficulty: advanced55095m12
Worked in 3 steps, each checked before the next one opens.
Select the event queue · SQL
Measure contact gaps · Answers
Hand over the access map · Python
Datasets
Global M5.5+ earthquakes, Jan–Mar 2025 · Point · 86 features · EPSG:4326
World airports · Point · 893 features · EPSG:4326
Populated places · Point · 1,251 features · EPSG:4326
What you’ll do
Select a reproducible event queue in SQL
Measure two independent global proximity indicators
Deliver an auditable access map with an explicit contact-gap distinction
projectUSGSnearest neighbourlogisticsglobalAlso trains Python, Data Management, Cartography
Open project
Not started, Defend a borough greening shortlistProjectDecision support3 steps
Measure canopy and summer vegetation on their own grids, then add low-ground context and apply one transparent shortlist rule.
Remote SensingadvancedDifficulty: advanced620 XP~110 min13 checksRemote SensingadvancedDifficulty: advanced620110m13
Worked in 3 steps, each checked before the next one opens.
Audit the vegetation rasters · Answers
Deliver the borough evidence table · Dataset file
Add low-ground context and shortlist · GeoJSON
Datasets
Greater London land cover 2021 (ESA WorldCover 10 m) · Raster · EPSG:4326
Greater London, Sentinel-2 red and NIR, 11 July 2025 · Raster · EPSG:32630
Greater London elevation (Copernicus DEM GLO-30) · Raster · EPSG:4326
London boroughs · Polygon · 33 features · EPSG:4326
What you’ll do
Audit the two vegetation measures from observed raster pixels
Hand over a per-borough canopy and NDVI table as a GIS file
Add area-weighted low ground and an explicit shortlist flag
zonal statisticsNDVIland coverDEMmulti-criteriaLondonAlso trains Spatial Analysis, Data Management
Open project
Not started, Plan a cycle redistribution shiftProjectDecision support3 steps
Classify the dock snapshot, propose bounded bike moves, and size the resulting shift with its unserved stations visible.
Spatial AnalysisadvancedDifficulty: advanced600 XP~100 min11 checksSpatial AnalysisadvancedDifficulty: advanced600100m11
Worked in 3 steps, each checked before the next one opens.
Classify the snapshot · SQL
Map feasible transfers · GeoJSON
Size the preliminary shift · Answers
Dataset
Santander Cycles docking stations (live snapshot) · Point · 799 features · EPSG:4326
What you’ll do
Classify full and empty active stations in SQL
Build a bounded nearest-source transfer map
Size a shift and report unserved empties from the same rules
nearest neighbouroperationscapacityCRStransportLondonAlso trains Data Management, GIS Architecture
Open project
Not started, Screen capital access exceptionsDecision supportGeoJSON
Use airport and port proximity to flag capitals that need direct logistics verification.
Spatial AnalysisadvancedDifficulty: advanced580 XP~100 min6 checksSpatial AnalysisadvancedDifficulty: advanced580100m6
You hand in a GeoJSON result.
Datasets
Populated places · Point · 1,251 features · EPSG:4326
World airports · Point · 893 features · EPSG:4326
Ports · Point · 1,081 features · EPSG:4326
What you’ll do
Compute nearest-neighbour distances from capitals to two facility layers, geodesically
Apply an ordered rule set to derive a category
Return the exceptions with the distances that justify them
nearest neighbourgeodesicclassificationlogisticsglobalAlso trains Data Management
Open problem
Not started, Which neighborhoods merit a service follow-up?Decision supportSQL
Join geocoded service requests to neighborhood polygons and map a review share only where the sample supports it.
PostGIS / SQLadvancedDifficulty: advanced390 XP~65 min8 checksPostGIS / SQLadvancedDifficulty: advanced39065m8
You hand in a spatial SQL query.
Datasets
2020 Neighborhood Tabulation Areas · MultiPolygon · 262 features · EPSG:4326
NYC 311 sewer requests, 1–7 June 2025 · Point · 408 features · EPSG:4326
What you’ll do
Join incident locations to neighborhoods with a boundary-inclusive predicate
Compute elapsed-time review share with a clear denominator
Suppress very small denominator areas before mapping percentages
NYC 311PostGISspatial joinservice operationsgraduated mapAlso trains Spatial Analysis, Cartography, Data Management
Open problem