The concept of Geospatial Data in GIS! Raster vs Vector Data: The Ultimate Guide- Part-2: Topic-004

The concept of Geospatial Data in GIS! Raster vs Vector Data: The Ultimate Guide @gisconnect
Chapters
00:00 Topic Overview
03:06 GIS Data Types
07:28 Vector Data Model (Point, Line, Polygon)
16:48 Practical Example of Vector Data (ArcGIS)
18:00 Raster Data Model
22:56 Concept of Spatial Resolution
27:48 Discrete vs Continuous Phenomena in GIS

a. Spatial or Geospatial or Geographic Data:
- Represents the physical location and shape of geographic features.
- It is divided into two main types:
1. Vector Data:
- Represents geographic features with discrete shapes.
- It has three main types:
- Points: Represent specific locations (e.g., the location of a city).
- Lines: Represent linear features (e.g., roads, rivers).
- Polygons: Represent areas (e.g., lakes, land parcels).
2. Raster Data:
• Represents geographic features as a grid of cells or pixels.
• Each cell has a value representing information such as elevation, temperature, or land cover.
• Examples include satellite imagery and digital elevation models (DEMs).

b. Attribute Data:
• Descriptive information about the spatial features.
• Stored in tables and linked to spatial data.
• Provides additional details about spatial features, such as name, type, population, or any other relevant information.



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