[DM-02-021] Modeling three-dimensional (3-D) entities

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Learning outcomes

• 732 - Differentiate between 21/2-D representations and true 3-D models
  Differentiate between 21/2-D representations and true 3-D models
• 997 - Explain how 3-D models can be extended to additional dimensions
  Explain how 3-D models can be extended to additional dimensions
• 1054 - Explain how octatrees are the 3-D extension of quadtrees
  Explain how octatrees are the 3-D extension of quadtrees
• 1084 - Explain how voxels and stack-unit maps that show the topography of a series of geologic layers might be considered 3-D extensions of field and vector representations respectively
  Explain how voxels and stack-unit maps that show the topography of a series of geologic layers might be considered 3-D extensions of field and vector representations respectively
• 1145 - Explain the difficulties in creating true 3-D objects in a vector or raster format
  Explain the difficulties in creating true 3-D objects in a vector or raster format
• 1213 - Explain the use of multi-patching to represent 3-D objects
  Explain the use of multi-patching to represent 3-D objects
• 1318 - Identify GIS application domains in which true 3-D models of natural phenomena are necessary
  Identify GIS application domains in which true 3-D models of natural phenomena are necessary
• 1391 - Illustrate the use of Virtual Reality Modeling Language (VRML) to model landscapes in 3-D
  Illustrate the use of Virtual Reality Modeling Language (VRML) to model landscapes in 3-D