Two Ways to Input and Visualize Data The World in GIS

  • Raster – Grid

    • “pixels”
    • a location and value
    • Satellite images and aerial photos are already in this format

  • Vector – Linear

    • Points, lines & polygons
    • “Features” (house, lake, etc.)
      • Attributes
        • size, type, length, etc.

    Real world

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