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Kharita Challenges
All paths
Offset analysis sheets converge on a point, with a search ring, a facility node and an arrow to a database.

From spatial evidence to response

A multi-technology response workflow: validate a raster, measure hazard context, screen global event data, query nearby facilities and design a database that keeps condition checks traceable.

Spatial Analysis

Steps
7
Each assumes the one before it
Time
~7.5 h
At the problems' own estimates
XP
2,590
Before hint costs and speed bonuses
Progress
0/7
Start the pathBegins with Accept the rasters, or send them back

What you will be able to do

Build an auditable response briefing from heterogeneous GIS evidence: reject unsuitable inputs, produce a map of what the data actually measures, retrieve candidate facilities with indexed spatial SQL, retain condition history in PostGIS and explain which access decisions still need direct verification.

The sequence

Each step assumes the one before it.

  1. Up nextAccept the rasters, or send them backUp nextThe checks a data manager runs on delivered rasters before anyone analyses them: extent, nodata, value range, and whether the figures are plausible for the place.intermediateDifficulty: intermediate200 XP~35 min
  2. 2How much of each borough lies below ten metres?Threshold a DEM, count inside polygons, and turn pixels into square kilometres on a geographic grid — a flood-screening figure per borough.intermediateDifficulty: intermediate240 XP~40 min
  3. 3Build the global seismic reconnaissance watchlistTurn a fixed USGS event feed into a mapped, reproducible shallow strong-event watchlist for requesting impact products.intermediateDifficulty: intermediate240 XP~40 min
  4. 4Which airfields should the response desk check?Use a metre-based spatial join to identify civil airfields near strong, shallow earthquake epicentres, with the facilities drawn on the map.intermediateDifficulty: intermediate260 XP~45 min
  5. 5Model event and airfield condition checksDesign a PostGIS schema that keeps earthquake events, airfields and repeated condition checks traceable.advancedDifficulty: advanced520 XP~85 min
  6. 6Build an earthquake contact reconnaissance queueProjectScreen strong shallow events, quantify airfield and settlement proximity, and hand over a traceable contact map.advancedDifficulty: advanced550 XP~95 min
  7. 7Screen capital access exceptionsUse airport and port proximity to flag capitals that need direct logistics verification.advancedDifficulty: advanced580 XP~100 min

Where it leads

Spatial Analysis is examined in the Open-Data Analyst — Associate, which issues the Kharita Certified Open-Data Analyst (Associate) (KODA-A1). The problems here are the practice; the assessment is the same kind of problem, under time.