Updated: Aug 27, 2020
A tri plot will plot the proportions or percentages of three variables, adding up to 1 or 100 respectively. To draw a tri plot in Stata, you first need to download the triplot command from the SSC. You do this with the following command in Stata:
To generate this graph in Stata use the following commands:
For a comprehensive exploration of the many Stata graph commands and options, check out the book A Visual Guide to Stata Graphics, 3rd Edition.