st: Counting unique values across a set of variables: Re-sent

[CM <cmhsieh54@yahoo.com>]

Hi all,

I checked findit but don't believe I found what I
need.

Each row in my data represents a respondent.  Besides
the first column "A" representing ID, the other
columns (call them B thru Y) contain strings or "."  I
need to create a variable in column Z that counts the
number of unique strings found for any given
respondent in B thru Y.  Advice?

Thanks in advance,
CM
*
*   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/