plot_colorbar

Plot a colorbar as a figure for publication.

Plots a vertical or horizontal colorbar for inclusion in a publication. The specified colorbar can be plotted either horizontally or vertically, and a function handle can be passed in to allow the use of different colormaps.

Written during some recent work, and then cleaned up and published here in case it's useful to anyone else.

Examples:
h1 = plot_colorbar([100, 5], 'h', 'Test Colormap')
h2 = plot_colorbar([150, 10], 'v', 'Test Colormap', @hsv)