- 2080 Chaitra · 4 marks
Short note: GIS advantages and applications
Short answer
GIS is a computer system for capturing, storing, analyzing, and displaying spatial data integrated with attributes. It outperforms conventional mapping by enabling easy updates, multi-layer analysis (overlay, query), dynamic scaling, and decision support. Applications include route selection, urban planning, utility management, hazard mapping, and environmental assessment.
What is GIS? Why is GIS advantageous than other mapping tools? Mention the application of GIS.
A Geographic Information System (GIS) is a computer-based system for the capture, storage, management, analysis and display of spatially referenced data, linking maps with attribute information.
Why GIS is better than other mapping tools
| Point | Conventional maps / CAD | GIS |
|---|---|---|
| Data | Graphics only | Spatial plus attribute data |
| Updating | Redrawing needed | Easy and fast |
| Analysis | Little or none | Overlay, buffer, network, query |
| Layers | Fixed, one sheet | Many layers on or off |
| Storage | Paper, large space | Compact digital database |
| Scale | Fixed | Any scale and projection |
| Output | One map | Maps, tables and reports on demand |
- Integrates data from surveying, GPS, remote sensing and photogrammetry.
- Helps decision making with "what-if" analysis.
Applications
- Route and site selection, urban and land use planning, cadastral mapping.
- Utility network management, transport planning.
- Water resources, flood and landslide hazard mapping, disaster management.
- Environmental monitoring and impact assessment.
✓ Answer checked by Claude Opus 5.5 (high effort)
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