Spatial Information Technology
Mizoram Board · Class 12 · Geography
Complete topic list for Spatial Information Technology in Mizoram Board Class 12 Geography. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Spatial Information Technology
1. Core Meaning and Scope
- Spatial is derived from space and refers to features and phenomena distributed over a geographically definable space.
- Spatial Information Technology is an amalgamation of Remote Sensing, GPS, GIS, Digital Cartography, and Database Management Systems.
- GIS is a system for capturing, storing, checking, integrating, manipulating, analysing, and displaying data that are spatially referenced to the Earth.
2. Forms of Geographical Information
- Two types of data represent geographical information: spatial and non-spatial data.
- Spatial data have positional, linear, and areal forms of appearance.
- Non-spatial data are attribute data that describe spatial entities.
3. Components and Structure of GIS
- The components of GIS are hardware, software, data, people, and procedures.
- Hardware includes processing, storage, display, input, and output subsystems.
- Software supports data entry, editing, maintenance, analysis, transformation, manipulation, display, and output.
4. Data Sources and Map Features
- A GIS core can be built by acquiring digital data from a supplier, digitising existing analogue data, or carrying out one's own surveys.
- The choice of data source is governed by the application area, available budget, and data structure type such as vector or raster.
- Maps are characterised by a definite scale, symbols and colours, and an agreed coordinate system.
Key Concepts
Central concept: Spatial Information Technology
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