st: re: restoring dataset

[Kit Baum <kitbaum@mac.com>]

< >

Choudry said:

I have a question. After using the command "keep" or "drop" and running
an analysis, how can i ask stata to use all the data again. The problem
starts when I run command e.g. for a subset of years and later I want to
run command on whole years in the same do file again.


He answered half of his question: he wants to use the -restore-  
command. But before doing that he must have the foresight to use - 
preserve-:

sysuse auto
summ
preserve
keep if foreign
summ
restore

etc.  Admittedly a silly example, as one could just summarize if  
foreign, but illustrative.

-help preserve-


Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/