Generating dummies and regression matrices from st_data

[Niels Henrik Bruun]

Hi
Just found out that st_data is even more powerfull than just retrieving data.
Try the following set of commands:

sysuse auto, clear
mata st_data(., "rep78 i.rep78")
mata st_data(., "foreign price i.foreign##c.price")
mata st_data(., "rep78 foreign i.rep78##i.foreign")

Nice touch, Stata Corp