donut

Generates donut plots or standard pie charts with explicit color definitions

So donut plots are not the preferred way to display proportional data, but sometimes you need their compactness. This is a simple 2-D donut plot that can be used to display 'n' categories of data in 'm' datasets when given an n x m matrix of values. Also, if the option is selected, the plot can be collapsed to a standard 2-D pie chart. With both donut and pie charts, you can explicitly define the category colors, which cannot be done in the MATLAB "pie" function.