--- MA V <[email protected]> wrote:
> Dear Statalist users,
>
> My problem is the following:
> I have 3 variables that can take the values 1 up to 3 and the data
> looks something like this
>
> obs var1 var2 var3
> 1 2 2 1
> 2 2 2 1
> 3 1 2 3
> 4 3 3 3
>
> I would like to obtain a table that says how many observations I have
> of each existing combination. But I would like this table to have a
> "description" for each of the combinations. i.e. the resulting table
> would be something like this:
>
> var1 var2 var3 count
> 1 2 3 1
> 2 2 1 2
> 3 3 3 1
>
> Note also that the lines in the table are ordered by the values of
> var1, var2 and var3.
A rather blunt solution is shown below:
*-------------- begin example ------------
drop _all
input obs var1 var2 var3
1 2 2 1
2 2 2 1
3 1 2 3
4 3 3 3
end
preserve
drop if missing(var1, var2, var3)
bys var1 var2 var3: gen N = _N
bys var1 var2 var3: keep if _n == 1
list var1 var2 var3 N
restore
*---------- end example -----------------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
___________________________________________________________
Now you can scan emails quickly with a reading pane. Get the new Yahoo! Mail. http://uk.docs.yahoo.com/nowyoucan.html
*
* 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/
