Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[no subject]



If you do programming, NC151 will be useful (see a recent announcement
on this list).

Eva

2008/10/6 Jacob Wegelin <jwegelin@vcu.edu>:
>
> Is there a way to check whether a variable is already defined, already
> exists? I'd like to write code of the following sort:
>
>
> if (variable called performance is not yet defined) {
>       gen performance=.
>       }
> replace performance=5 if name=George
>
> Thanks for any ideas
>
> Jake
>
> Jacob A. Wegelin
> jwegelin@vcu.edu Assistant Professor
> Department of Biostatistics
> Virginia Commonwealth University
> 730 East Broad Street Room 3006
> P. O. Box 980032
> Richmond VA 23298-0032
> U.S.A. http://www.people.vcu.edu/~jwegelin
*
*   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/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index