Dear Stata-listers,
I just started to use Stata and I would like how to generate new variables with the -foreach- command.
However, it's not that easy I thought...
Here is an example:
In order to get the precent values in this dataset (time-series 1990-2004)I would like to generate new variables:
c_bb*= a_bb*/b_bb* if *==*, where * is the varname extension:
c_bb01=a_bb01/b_bb01
c_bb03=a_bb03/b_bb03
c_bb10=a_bb10/b_bb10
c_bb11=a_bb11/b_bb11
c_bb20=a_bb20/b_bb20
.
.
.
a_bb995/b_bb995=c_bb995
I tried this, but it does not work. I suppose it's because of the "*==*" expression:
. foreach var of newvarlist c_bb* {
2. gen c_bb*=a_bb*/b_bb* if *==*
3. format c_bb* %9,4f
4.}
invalid syntax
r(198);
I could do it with the -generate- command, but it would be quite complicated, there are a lot of variables.
gen c_bb1=.
replace c_bb01=a_bb01/b_bb01
.
.
.
replace c_bb20=a_bb20/b_bb20
gen f_bb1=.
replace f_bb01=d_bb01/e_bb01
.
.
.
replace f_bb20=d_bb20/e_bb20
Any suggestions how to do it with foreach?
Thanks,
Michael
_______________________________________________________________
SMS schreiben mit WEB.DE FreeMail - einfach, schnell und
kostenguenstig. Jetzt gleich testen! http://f.web.de/?mc=021192
*
* 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/
