In addition to several other answers, some of which seem to tackle
Carmen's problem and others which could be useful anyway, there are also
-groups- and -tabcount- from SSC.
A write-up accessible to all, SJ subscribers or not, is at
SJ-3-4 pr0011 . . . . . . . . Speaking Stata: Problems with tables,
Part II
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N.
J. Cox
Q4/03 SJ 3(4):420--439 (no
commands)
reviews three user-written commands (tabcount, makematrix,
and groups) as different approaches to tabulation problems
This can be seen on-line at
<http://www.stata-journal.com/sjpdf.html?articlenum=pr0011>
The key problem behind Carmen's problem was well explained by Maarten
Buis: How is Stata to know about values that might exist as far you are
concerned but don't exist in the data?
Ben Jann's -fre- implements one natural Stataish idea, that for
categorical variables a value label will be defined.
-tabcount- in particular implements a more mundane idea: you spell out
to Stata which values you want to tabulate. It also adds a less usual
twist: you can specify bins using inequalities (which need not be
disjoint).
Nick
[email protected]
carmen gamarra
> I want to obtain tables with all categories of every variables, even
those of value=zero
>
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