L 6 Unit 9 Geographical Techniques | Topographical Map | Topo Sheet | NTA NET 2021 | By Ankit Sir
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Unit IX: Geographical Techniques
Sources of Geographic Information and Data (spatial and nonspatial), Types of
Maps, Techniques of Map Making (Choropleth, Isarithmic, Dasymetric,
Chorochromatic, Flow Maps) Data Representation on Maps (Pie diagrams, Bar
diagrams and Line Graph, GIS Database (raster and vector data formats and
attribute data formats). Functions of GIS (conversion, editing and analysis), Digital
Elevation Model (DEM), Georeferencing (coordinate system and map projections
and Datum), GIS Applications ( thematic cartography, spatial decision support
system), Basics of Remote Sensing (Electromagnetic Spectrum, Sensors and
Platforms, Resolution and Types, Elements of Air Photo and Satellite Image
Interpretation and Photogrammetry), Types of Aerial Photographs, Digital Image
Processing: Developments in Remote Sensing Technology and Big Data Sharing
and its applications in Natural Resources Management in India, GPS Components
(space, ground control and receiver segments) and Applications, Applications of
Measures of Central Tendency, Dispersion and Inequalities, Sampling, Sampling
Procedure and Hypothesis Testing (chi square test, t test, ANOVA), Time Series
Analysis, Correlation and Regression Analysis, Measurement of Indices, Making Indicators Scale Free, Computation of Composite Index, Principal Component
Analysis and Cluster Analysis, Morphometric Analysis: Ordering of Streams,
Bifurcation Ratio, Drainage Density and Drainage Frequency, Basin Circularity
Ratio and Form Factor, Profiles, Slope Analysis, Clinographic Curve,
Hypsographic Curve and Altimetric Frequency Graph.
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