The mathematical software program MATLAB is a useful tool for calculating and/or collecting data and then plotting two-dimensional and three-dimensional graphs to display that data. MATLAB has many plotting options, which include line plots, which follow a single line through 2-D or 3-D space, and a wide variety of surface plots, which plot a surface in three dimensions. By default, MATLAB colors surface plots with a coloring scheme that spans the rainbow. You can override that default and plot a figure in grayscale, either when initially commanding the plot or after MATLAB creates the graph.