Step-by-step solutions for every numerical from IOE exams (2071–2081)
28 Questions across 4 Chapters-
02
GIS and Maps — RMS Error & Distance Allowable RMS error, lat-lon distance, UTM projection8 Qs
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03
Spatial Data Models — RLE, Quadtree & Block Encoding Run-length encoding, quadtree compression, block codes, % reduction7 Qs
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07
Spatial Analysis — IDW Interpolation & Suitability Inverse distance weighting (p=1, p=2), rice crop suitability analysis2 Qs
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09
River Network — DEM Hydrology Sink detection & fill, D8 flow direction, flow accumulation, watershed delineation11 Qs
Topics Covered
- Allowable RMS planimetric error
- Great-circle distance calculation
- Latitude vs longitude arc length
- Run-length encoding (RLE)
- Quadtree raster compression
- Block encoding & chain codes
- IDW interpolation (power 1 & 2)
- Multi-criteria suitability analysis
- Sink detection & filling
- D8 flow direction codes
- Flow accumulation grids
- River threshold & watershed area