NCSU GIS/MEA582:
Geospatial Modeling and Analysis

2. Geospatial Data

2.A Geospatial data models

Outline:
  • raster and vector data models
  • raster-vector conversions and resampling
  • geospatial formats, conversions, geospatial data abstraction library
  • data repositories, metadata

Lecture

Slides and recorded video: Supplemental materials:

Assignment part A: Geospatial data models, conversions, resampling

2.B Data display and visualization

Outline:
  • display of continuous and discrete data, use of color, shading, symbols to extract the spatial pattern and relationships
  • 3D visualization: multiple surfaces and volumes, 3D vector objects
  • visualization for data analysis (lighting, zscaling, transparency, cutting planes, animations)
  • Sharing data on-line

Lecture

Slides and recorded video: Supplemental materials:

Assignment part B: Data display and visualization

Homework 2. A and B

Following the results of Assignments 2A, 2B, write a paper that describes geospatial data models and their conversions (changing raster resolution, vector data type, raster to vector and vector to raster) issues, methods, results. Also explain methods and results for graphical representation of continuous and discrete geospatial data. Demonstrate the use of multiple surfaces for visual analysis of the difference between the bare ground surface and multiple return surface with vegetation.