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# SESSION FOUR

In our final session we will concentrate on color images and perspective views of gridded data sets. Before we start that discussion we need to cover two important aspects of plotting that must be understood. These are

1.
  Color tables and pseudo-colors in GMT.

2.
  Artificial illumination and how it affects colors.

- The cpt file format
  - Exercises
- Illumination and intensities
- Color images
  - Exercises
- Perspective views
  - Mesh-plot
    - Exercises
  - Color-coded view
    - Exercises