st: funcdep & collapseunique

[David Kantor <kantor.d@att.net>]

Hi everyone.
Thanks to Kit Baum, some updates to funcdep and collapseunique in the 
collapseunique package have been placed in SSC.

funcdep tests for functional dependency; collapseunique collapses 
data to unique values within by-groups.

funcdep formerly was sortpreserve; it now is set up so that the 
sortpreserve effect is optional. This change was made because there 
may be times when you want it to leave the data sorted by the basis 
variables, especially if you are invoking funcdep repeatedly. 
collapseunique, which calls funcdep, has been adjusted to take 
advantage of this change, and may run more efficiently under some 
circumstances.

For those that are interested,...
 ssc desc collapseunique
 ssc inst collapseunique

--David

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/