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Geographical Information System (GIS).pptx

  1. Geographical Information System (GIS) BASIC LEARNING NOOR BALOCH
  2. I. Introduction to GIS  Definition: A GIS is a computer-based system for capturing, storing, analyzing, and managing data and associated attributes which are spatially referenced to the earth.  Uses: GIS is used in many industries, including government, transportation, environment, and others, for decision-making, planning, and management purposes.
  3. II. Components of GIS  Data: The most important component of GIS is the data. It includes both geographical and non-geographical data.  Hardware: GIS requires specialized hardware, including computers, servers, and storage systems.  Software: There are many different GIS software programs available, including ArcGIS, QGIS, and others.  People: GIS requires skilled professionals, including GIS analysts, cartographers, and geospatial data scientists, to create, maintain, and use the system.
  4. III. GIS Data Types  Vector data: Vector data represents geographical features as points, lines, and polyggon shapes.  Raster data: Raster data represents geographical features as a grid of cells, where each cell has a value representing a feature.  Attribute data: Attribute data is the non-geographical information associated with geographical features, such as population, income, and others.
  5. IV. GIS Analysis  Spatial analysis: Spatial analysis is the process of analyzing geographical data to uncover patterns and relationships.  Query: Query is a method for extracting data from a GIS based on user- defined conditions.  Map production: Map production is the process of creating maps using GIS data.
  6. V. Conclusion  GIS is a powerful tool for understanding and managing the world around us.  GIS helps us make informed decisions by providing a visual representation of data and allowing us to analyze it.  GIS is used in many different industries and has a wide range of applications.
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