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Kharita Challenges

Problems

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

2 of 59 problems

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Track
Spatial Analysis0 problemsPostGIS / SQL0 problemsPython2 problemsRemote Sensing0 problemsCartography0 problemsWeb GIS0 problemsData Management2 problemsGIS Architecture0 problems
Level
Beginner1 problemIntermediate0 problemsAdvanced1 problemExpert0 problems
Hand in
SQL0 problemsPython2 problemsGeoJSON0 problemsAnswers0 problemsSchema0 problemsDecisions0 problemsDataset file0 problems
Category
Data preparation2 problemsData quality1 problemSpatial analysis6 problemsRaster analysis0 problemsCartography1 problemDecision support3 problemsGeospatial systems0 problemsWeb delivery1 problem
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PythonData preparationPythonClear all
  1. 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 checks

    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
  2. 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 checks

    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