Problems

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

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Data Management Python Clear all

Not started, Make the pharmacy handover loadableData preparationPython
Repair a field table so a Paris health directory can map its pharmacy locations reliably.
Data ManagementbeginnerDifficulty: beginner125 XP~25 min6 checksData ManagementbeginnerDifficulty: beginner12525m6
You hand in a Python script.
Dataset
Raw Paris pharmacy handover · Table · 21 rows · EPSG:4326
What you’ll do
Parse and validate coordinates before constructing point geometry.
Preserve the first source record for each reference.
Deliver a typed, spatially plausible point layer.
data-preparationcoordinatesquality-controlparisAlso trains Python
Open problem
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 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 places can the emissions change map actually compare?Data qualityPython
Audit two-date indicator coverage and map the places excluded before showing a climate trend.
Data ManagementintermediateDifficulty: intermediate290 XP~45 min6 checksData ManagementintermediateDifficulty: intermediate29045m6
You hand in a Python script.
Datasets
Countries · MultiPolygon · 241 features · EPSG:4326
CO2 per capita by country, 2010 and 2022 · Point · 241 features · EPSG:4326
What you’ll do
Audit missingness before a two-date map is interpreted
Prevent a many-to-many join on nonstandard ISO codes
Show complete and incomplete coverage on real country polygons
World Bankdata qualitymissing datacategorical mapglobalAlso trains Python, Cartography
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, How much of each state is built up?Spatial analysisPython
Overlay the urban footprints on the states in an equal-area projection and credit each side of a state line only what lies on it.
PythonadvancedDifficulty: advanced320 XP~55 min5 checksPythonadvancedDifficulty: advanced32055m5
You hand in a Python script.
Datasets
United States states · Polygon · 51 features · EPSG:4326
Urban areas · Polygon · 2,143 features · EPSG:4326
What you’ll do
Reproject both layers to an equal-area CRS
Clip the urban footprints to the states with an overlay
Sum clipped area per state and express it as a share of the state's area
GeoPandasoverlayequal-areaAlbersland useAlso trains Spatial Analysis, Data Management
Open problem
Not started, Repair the park intake without losing its second partData preparationPython
Repair an invalid park outline while preserving every valid polygon component.
Data ManagementadvancedDifficulty: advanced370 XP~55 min6 checksData ManagementadvancedDifficulty: advanced37055m6
You hand in a Python script.
Dataset
Cape Town park polygons, geometry intake · Polygon · 11 features · EPSG:4326
What you’ll do
Repair topology without discarding area.
Handle null geometry and source precedence before release.
Deliver a uniform polygon type.
data-preparationcape townpythonAlso trains Python
Open problem
Not started, Show country CO2 change without losing the outlierCartographyPython
Join two WDI observations to country polygons, preserve the true change, and cap only the display value.
CartographyadvancedDifficulty: advanced500 XP~85 min7 checksCartographyadvancedDifficulty: advanced50085m7
You hand in a Python script.
Datasets
Countries · MultiPolygon · 241 features · EPSG:4326
CO2 per capita by country, 2010 and 2022 · Point · 241 features · EPSG:4326
What you’ll do
Audit and join two independently sourced global datasets on a stable country key
Calculate signed per-capita change while excluding missing year pairs
Publish a diverging polygon map with a disclosed display cap and the true values retained
projectWorld BankNatural Earthdata joindiverging mapglobalAlso trains Python, Data Management
Open problem
Not started, River kilometres per country, measured on the ellipsoidSpatial analysisPython
Clip the river centrelines to the country polygons and measure each piece geodesically — no projection is right for a layer that spans the planet.
PythonexpertDifficulty: expert400 XP~70 min6 checksPythonexpertDifficulty: expert40070m6
You hand in a Python script.
Datasets
Countries · MultiPolygon · 241 features · EPSG:4326
Rivers and lake centrelines · LineString · 461 features · EPSG:4326
What you’ll do
Find every river–country pair that intersects
Cut each river to the country polygon
Measure the pieces geodesically and sum per country
GeoPandaspyprojgeodesicoverlayhydrologyglobalAlso trains Spatial Analysis, Data Management
Open problem
Not started, Screen rivers for a shared-water annexSpatial analysisPython
Measure mapped river lengths by country and screen the rivers whose courses are meaningfully shared.
PythonexpertDifficulty: expert650 XP~120 min7 checksPythonexpertDifficulty: expert650120m7
You hand in a Python script.
Datasets
Rivers and lake centrelines · LineString · 461 features · EPSG:4326
Countries · MultiPolygon · 241 features · EPSG:4326
What you’ll do
Intersect every river with every country it touches and measure each piece geodesically
Aggregate the pieces per river into a count of meaningful holders and a dominance share
Assign the shared rivers, ranked by how evenly they are shared, to result
GeoPandaspyprojgeodesicoverlayhydrologyglobalAlso trains Spatial Analysis, Data Management
Open problem