pie chart source code

[Demetris Christodoulou]

Does anyone know whether is it possible to see the pie chart source code as per, for example, viewsource histogram.ado ?

[William Lisowski]

It's not as easy as for histogram.ado. The programs for producing pie charts are written using ado classes (see the class section in the Stata Programming Reference Manual PDF) so if you look in the Stata adopath BASE directory in the p subdirectory you will see several .class files that you can read with viewsource, e.g.

viewsource piegraph_g.class

[Demetris Christodoulou]

excellent, thank you!