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GIS Layers

Geographic Information System (GIS) as one of desciplines for spatial data science. In this lesson discuss about GIS Layering.

GIS Layers

Five Layers of GIS, for Spatial Data Science and application.

  1. Spatial reference framework
  2. Spatial data model
  3. Spatial data acquisition systems
  4. Spatial data analysis
  5. Geo-visualization and information delivery
GIS Layering

1. Spatial reference framework

Spatial Reference Framework is known as A spatial reference system (SRS) or coordinate reference system (CRS). It’s included physical Earth, Geoid, Ellipsoid, Datum, and Map projection.

2. Spatial data model

Spatial Data Models represent the spatial reality in two spatial data models, i)Vector data model and ii) Raster data model. Vector data represents spatial and attribute components and relationship. Others spatial data models, like Network model, TIN model, DEM model, etc.

3. Spatial data acquisition systems

Spatial Data Acquisition Systems will cover how to acquire and produce spatial data. Example of Spatial Data Acquisition Systems, Conventional survey, GPS, GNSS, Photogrammetry/ Satellite image, Lidar, etc.

4. Spatial data analysis

Spatial Data Analysis is, how to extract useful and valuable information from spatial data. The Spatial analysis more advanced algorithms to find out data structure. Example of Spatial Data Analysis, Proximity analysis, Spatial Interpolation, Network analysis, Terrain analysis, Factor analysis, etc.

5. Geo-visualization and information delivery

Geo-visualization and Information Delivery is a powerful aspects, and negative potentials of cartographic representations of the spatial phenomenon.Geo-visualization uses for Topography creation, Scale and Map generation, Map animation, Web mapping service, etc.

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