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Goal for Week 9: Making graphs of 2D variables

Summary of new tools and commands.

• contour draw lines of constant value through a 2D array of numbers.
• clabel put labels on the lines created by contour
• contourf draw lines of constant value through a 2D array of numbers and fill area between lines with colors
• pcolor use varying colors to represent the values in a 2D array of numbers
• colorbar add a scale linking colors to contour values
• colormap choose the colors associated with color indexes.
• meshgrid create a 2D array of numbers by copying 2 1D arrays
• mesh show the values of a 2D array in a 3D perspective plot were the values are indicated by height
• surf a 3D presentation like mesh with areas filled with colors.
• shading determines how a color changes across a color patch in 3D plots
• view specifies the viewing direction for 3D perspective plots
• griddata converts a set of values at random points into a regular 2D grid
• interp2 interpolates values in 2D to a different grid of 2D locations

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