donut

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.